repunit (factors)

This table contains the integer factorization of the repunit numbers R₁ to R₅₀.

Repunit	Prime factors	Num Factors
R₁	1	1
R₂	Prime	1
R₃	3 37	2
R₄	11 101	2
R₅	41 271	2
R₆	3 7 11 13 37	5
R₇	239 4,649	2
R₈	11 73 101 137	4
R₉	3² 37 333,667	4
R₁₀	11 41 271 9,091	4
R₁₁	21,649 513,239	2
R₁₂	3 7 11 13 37 101 9,901	7
R₁₃	53 79 265,371,653	3
R₁₄	11 239 4,649 909,091	4
R₁₅	3 31 37 41 271 2,906,161	6
R₁₆	11 17 73 101 137 5,882,353	6
R₁₇	2,071,723 5,363,222,357	2
R₁₈	3² 7 11 13 19 37 52,579 333,667	9
R₁₉	Prime	1
R₂₀	11 41 101 271 3,541 9,091 27,961	7
R₂₁	3 37 43 239 1,933 4,649 10,838,689	7
R₂₂	11² 23 4,093 8,779 21,649 513,239	7
R₂₃	Prime	1
R₂₄	3 7 11 13 37 73 101 137 9,901 99,990,001	10
R₂₅	41 271 21,401 25,601 182,521,213,001	5
R₂₆	11 53 79 859 265,371,653 1,058,313,049	6
R₂₇	3³ 37 757 333,667 440,334,654,777,631	7
R₂₈	11 29 101 239 281 4,649 909,091 121,499,449	8
R₂₉	3,191 16,763 43,037 62,003 77,843,839,397	5
R₃₀	3 7 11 13 31 37 41 211 241 271 2,161 9,091 2,906,161	13
R₃₁	2,791 6,943,319 57,336,415,063,790,604,359	3
R₃₂	11 17 73 101 137 353 449 641 1,409 69,857 5,882,353	11
R₃₃	3 37 67 21,649 513,239 1,344,628,210,313,298,373	6
R₃₄	11 103 4,013 2,071,723 5,363,222,357 21,993,833,369	6
R₃₅	41 71 239 271 4,649 123,551 102,598,800,232,111,471	7
R₃₆	3² 7 11 13 19 37 101 9,901 52,579 333,667 999,999,000,001	12
R₃₇	2,028,119 247,629,013 2,212,394,296,770,203,368,013	3
R₃₈	11 909,090,909,090,909,091 R₁₉	3
R₃₉	3 37 53 79 265,371,653 900,900,900,900,990,990,990,991	6
R₄₀	11 41 73 101 137 271 3,541 9,091 27,961 1,676,321 5,964,848,081	11
R₄₁	83 1,231 538,987 201,763,709,900,322,803,748,657,942,361	4
R₄₂	3 7² 11 13 37 43 127 239 1,933 2,689 4,649 459,691 909,091 10,838,689	15
R₄₃	173 1,527,791 1,963,506,722,254,397 2,140,992,015,395,526,641	4
R₄₄	11² 23 89 101 4,093 8,779 21,649 513,239 1,052,788,969 1,056,689,261	11
R₄₅	3² 31 37 41 271 238,681 333,667 2,906,161 4,185,502,830,133,110,721	10
R₄₆	11 47 139 2,531 549,797,184,491,917 R₂₃	6
R₄₇	35,121,409 316,362,908,763,458,525,001,406,154,038,726,382,279	2
R₄₈	3 7 11 13 17 37 73 101 137 9,901 5,882,353 99,990,001 9,999,999,900,000,001	13
R₄₉	239 4,649 505,885,997 1,976,730,144,598,190,963,568,023,014,679,333	4
R₅₀	11 41 251 271 5,051 9,091 21,401 25,601 182,521,213,001 78,875,943,472,201	10

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