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Smarandache-wellin NumberIn mathematics, Smarandache-Wellin numbers are special integers; the n-th Smarandache-Wellin number is defined as the concatenation of the first n prime numbers written in decimal notation. A generalization to other number systems is possible. A Smarandache-Wellin number that is also prime is called a Smarandache-Wellin prime. The first Smarandache-Wellin numbers are 2, 23, 235, 2357, 235711, ... ; the first few indices n of Smarandache-Wellin numbers that are prime are 1, 2, 4, 128, 174, 342, ... .
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