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200 (Number)200 is the natural number following 199 and preceding 201. Two hundred is the smallest unprimeable number - it can not be turned into a prime number by changing just one of its digits to any other digit. It is also a Harshad number. Two hundred is also: - A common ISO-standard film speed for photographic films. However, 200 speed film is being phased out in consumer films in favor of faster films.
- A denomination of the euro note. The 200 euro note was designed by Robert Kalina.
- An HTTP status code indicating a successful connection.
Other numbers in the 200s Two hundred and one 201 = 367, Harshad number, also HTTP status code indicating success of a POST command, with the textual part of the response line indicating the URI by which the newly created document should be known. Also, the title of the episode "11001001", also the area code for northern New Jersey.
Two hundred and two 202 = 2101, sum of four consecutive primes (43 + 47 + 53 + 59), Smith number, nontotient, noncototient, also HTTP status code meaning the request was accepted but has not yet been fulfilled, also telephone area code for District of Columbia.
Two hundred three 203 = 729, 6th Bell number, also HTTP status code indicating partial information, also the area code for Southwest Connecticut - Fairfield & New Haven counties.
Two hundred four 204 = 22317, sum of a twin prime (101 + 103), sum of six consecutive primes (23 + 29 + 31 + 37 + 41 + 43), nonagonal number, square pyramidal number, Harshad number, also HTTP status code indicating the request was received but there is no response to the request, also telephone area code for Manitoba
Two hundred five 205 = 541, also spur routes of Interstate 5, also the area code for northern Alabama.
Two hundred six 206 = 2103, nontotient, noncototient, untouchable number, also the area code for Seattle, Washington. Also, the number of bones in a normal human skeleton according to Gray's Anatomy.
Two hundred seven 207 = 3223, Wedderburn-Etherington number, Harshad number, also telephone area code for Maine
Two hundred eight 208 = 2413, tetranacci number, sum of the squares of the first five primes, also telephone area code for Idaho
Two hundred nine 209 = 1119, highly cototient number, Harshad number, self number, also the area code for Modesto, California.
Two hundred ten 210 = 2357, primorial, triangular number, sum of eight consecutive primes (13 + 17 + 19 + 23 + 29 + 31 + 37 + 41), pronic number, pentagonal number, Harshad number, untouchable number. Also, spur routes of Interstate 10, also the area code for San Antonio, Texas.
Two hundred eleven 211 prime, primorial prime, sum of three consecutive primes (67 + 71 + 73), centered decagonal number, self number, also, SMTP status code for system status
Two hundred twelve 212 = 2253. Also in degrees Fahrenheit, the boiling point of water at sea level, also the area code for New York, New York.
Two hundred thirteen 213 = 371, also the area code for Los Angeles, California.
Two hundred fourteen 214 = 2107, Mertens function returns 0, nontotient, also the number of bones in a normal human skeleton according to Sarah in , form DD 214 documents discharge from the U.S. Armed Forces, SMTP status code for help message
Two hundred fifteen 215 = 543. Also, spur routes of Interstate 15. Form DD 215 is for corrections to form DD 214.
Two hundred sixteen 216 = 2333 = 63 = 33 + 43 + 53, making it the smallest cube that's also the sum of three cubes; sum of a twin prime (107 + 109), Harshad number, untouchable number, also the number of colors in the Netscape Web-safe color palette; also ISO 216 is the ISO's standard for paper sizes
Two hundred seventeen 217 = 731, centered hexagonal number
Two hundred eighteen 218 = 2109, Mertens function(218) = 3 a record high that stands until 219, nontotient, noncototient
Two hundred nineteen 219 = 373, Mertens function(219) = 4 a record high that stands until 221
Two hundred twenty has its own article.
Two hundred twenty-one 221 = 1317, sum of five consecutive primes (37 + 41 + 43 + 47 + 53), sum of nine consecutive primes (11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41), centered square number, Mertens function(221) = 5 a record high that stands until 554. SMTP status code for service closing transmission channel. In the Sherlock Holmes mysteries by Arthur Conan Doyle, the address where Sherlock Holmes and Dr. Watson lived at for many years with Mrs. Hudson as their landlady. External link: http://www.221bakerstreet.org
Two hundred twenty-two has its own article.
Two hundred twenty-three 223 prime, sum of three consecutive primes (71 + 73 + 79), sum of seven consecutive primes (19 + 23 + 29 + 31 + 37 + 41 + 43), strictly non-palindromic number; also the number of United Nations resolution 223, regarding the treatment of Israel, and the flight number of a British Airways plane believed targeted for the symbolism of its number
Two hundred twenty-four 224 = 257, Harshad number
Two hundred twenty-five 225 = 3252 = 152, octagonal number, centered pentagonal number, centered octagonal number, sum of the cubes of the first five integers, Harshad number
Two hundred twenty-six 226 = 2113
Two hundred twenty-seven 227 prime, safe prime, twin prime with 229, also the name of a TV show starring Marla Gibbs and Hal Williams
Two hundred twenty-eight 228 = 22319, sum of six consecutive primes (29 + 31 + 37 + 41 + 43 + 47), sum of ten consecutive primes (7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41), Harshad number
Two hundred twenty-nine 229 prime, twin prime with 227
Two hundred thirty 230 = 2523, sphenic number, Harshad number, nontotient. Also, common voltage in the European Union.
Two hundred thirty-one 231 = 3711, sphenic number, triangular number, hexagonal number, octahedral number, Mertens function returns 0
Two hundred thirty-two 232 = 2329, decagonal number, Mertens function returns 0, noncototient
Two hundred thirty-three 233 prime, Fibonacci number, Sophie Germain prime, self number
Two hundred thirty-four 234 = 23213, Harshad number, nontotient
Two hundred thirty-five 235 = 547, sum of three consecutive primes (73 + 79 + 83), Mertens function returns 0, Smarandache-Wellin number, centered triangular number
Two hundred thirty-six 236 = 2259, Mertens function returns 0, nontotient
Two hundred thirty-seven 237 = 379
Two hundred and thirty-eight 238 = 2717, sphenic number, sum of the first thirteen primes, Mertens function returns 0, untouchable number. Also, the designation of United States Interstate 238, the only three-digit designated Interstate that is not a spur route of a larger Interstate.
Two hundred thirty-nine has its own article.
Two hundred forty 240 = 2435, sum of four consecutive primes (53 + 59 + 61 + 67), highly composite number, highly totient number, sum of eight consecutive primes (17 + 19 + 23 + 29 + 31 + 37 + 41 + 43), pronic number, Harshad number. Also, common voltage in England and Australia before conversion to 230V standard. In British currency, the number of pence in a pound until 1971.
Two hundred forty-one 241 prime, twin prime with 239
Two hundred forty-two 242 = 2112, nontotient
Two hundred forty-three 243 = 35, sum of five consecutive primes (41 + 43 + 47 + 53 + 59), Harshad number
Two hundred forty-four 244 = 2261, nontotient, noncototient, self number
Two hundred forty-five 245 = 572. In the MARC format for records in online public access (library) catalogs, in which each type of information about a book (or other library material) is identified with a 3-digit number, 245 identifies the title of the item; most library catalog software requires that each record have at least a 245 tag, even if no other information is entered about the item.
Two hundred forty-six 246 = 2341, sphenic number, nontotient, untouchable number
Two hundred forty-seven 247 = 1319, pentagonal number
Two hundred forty-eight 248 = 2331, nontotient, untouchable number
Two hundred forty-nine 249 = 383
Two hundred fifty 250 = 253. In the Holy Bible, the number of men rebelling against Moses, who were swallowed up by a fire. (Numbers 26:10). SMTP status code for mail action completed. As a Mandarin slang, 250 (or 二百五 pinyin er4 bai2 wu3) refers to someone who is mentally retarded, stupid or a failure with no useful skills. The slang is based on another slang ban diao zi (半弔子 ban4diao4zi0) which means something similar but to a much lesser extent. In ancient China, a bunch of 1000 copper coins tied together through the square holes in the center is called a diao (弔). Ban diao zi literally means half a diao (500 coins) which refers to a person who is inadequate in skills or mental abilities. Moderate Chinese scholars often call themselves ban diao zi in their own expertise areas as a humble gesture. Therefore ban diao zi is not necessarily a pejorative term depending on context of usage. On the contrary, Er bai wu (250) is half of a ban diao zi and it is meant as an insult.
Two hundred fifty-one 251 prime, Sophie Germain prime, sum of three consecutive primes (79 + 83 + 89), sum of seven consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47). SMTP status code for user not local, mail will be forwarded
Two hundred fifty-two 252 = 22327, Harshad number
Two hundred fifty-three 253 = 1123, triangular number, star number, centered heptagonal number, centered nonagonal number
Two hundred fifty-four 254 = 2127, Mertens function returns 0, nontotient
Two hundred fifty-five has its own article.
Two hundred and fifty-six has its own article.
Two hundred fifty-seven 257 prime, Fermat prime
Two hundred fifty-eight 258 = 2343, sphenic number, sum of four consecutive primes (59 + 61 + 67 + 71), nontotient
Two hundred fifty-nine 259 = 737
Two hundred sixty has its own article.
Two hundred sixty-one 261 = 3229, nonagonal number, Harshad number
Two hundred sixty-two 262 = 2131, meandric number, open meandric number, untouchable number
Two hundred sixty-three 263 prime, safe prime, sum of five consecutive primes (43 + 47 + 53 + 59 + 61), strictly non-palindromic number
Two hundred sixty-four 264 = 23311, Harshad number
Two hundred sixty-five 265 = 553, Smith number, centered square number
Two hundred sixty-six 266 = 2719, sphenic number, Harshad number, nontotient, noncototient, self number
Two hundred sixty-seven 267 = 389
Two hundred sixty-eight 268 = 2267, noncototient, untouchable number
Two hundred sixty-nine 269 prime, sum of three consecutive primes (83 + 89 + 97), highly cototient number, strictly non-palindromic number
Two hundred seventy 270 = 2335, harmonic divisor number, Harshad number, also the minimum number of votes to be chosen President of the United States by the U.S. Electoral College.
Two hundred seventy-one 271 prime, cuban prime, centered hexagonal number
Two hundred seventy-two 272 = 2417, sum of four consecutive primes (61 + 67 + 71 + 73), Euler number, primitive semiperfect number, pronic number
Two hundred seventy-three has its own article.
Two hundred seventy-four 274 = 2137, tribonacci number, Smith number, nontotient, noncototient, centered triangular number
Two hundred seventy-five 275 = 5211. Also, spur routes of Interstate 75.
Two hundred seventy-six 276 = 22323, triangular number, hexagonal number, centered pentagonal number, untouchable number
Two hundred seventy-seven 277 prime, self number
Two hundred seventy-eight 278 = 2139, nontotient
Two hundred seventy-nine 279 = 3231 Every positive integer is the sum of at most 279 eighth powers.
Two hundred eighty 280 = 2357, octagonal number, Harshad number
Two hundred and eighty-one 281 prime, twin prime with 283, Sophie Germain prime, sum of the first fourteen primes, sum of seven consecutive primes (29 + 31 + 37 + 41 + 43 + 47 + 53), centered decagonal number
Two hundred eighty-two 282 = 2347, sphenic number
Two hundred eighty-three 283 prime, twin prime with 281, strictly non-palindromic number
Two hundred eighty-four 284 amicable number with 220; nontotient. 284 degrees Celsius is the flash point of paper.
Two hundred eighty-five 285 = 3519, sphenic number, square pyramidal number, Harshad number, also in Star Trek, the total number of Rules of Acquisition.
Two hundred eighty-six 286 = 21113, sphenic number, tetrahedral number, nontotient, also shorthand for the Intel 80286 microprocessor chip
Two hundred eighty-seven 287 = 741, sum of three consecutive primes (89 + 97 + 101), sum of five consecutive primes (47 + 53 + 59 + 61 + 67), sum of nine consecutive primes (17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47), pentagonal number, also shorthand for the Intel math coprocessor to the 80286
Two hundred eighty-eight 288 = 2532, pentagonal pyramidal number, 5 superfactorial, untouchable number, Harshad number, self number
Two hundred eighty-nine 289 = 172, centered octagonal number, Friedman number since (8+9)^2=289
Two hundred ninety 290 = 2529, sphenic number, sum of four consecutive primes (67 + 71 + 73 + 79), nontotient, noncototient, untouchable number
Two hundred ninety-one 291 = 397
Two hundred ninety-two 292 = 2273, noncototient, untouchable number
Two hundred ninety-three 293 prime, Sophie Germain prime, strictly non-palindromic number
Two hundred ninety-four 294 = 2372
Two hundred ninety-five 295 = 559, also, the numerical designation of seven spur routes of Interstate 95
Two hundred ninety-six 296 = 2337
Two hundred ninety-seven 297 = 3311, decagonal number, Kaprekar number
Two hundred ninety-eight 298 = 2149, nontotient, noncototient
Two hundred and ninety-nine 299 = 1323, highly cototient number, self number
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