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A028416 Primes p such that the decimal expansion of 1/p has a periodic part of even length. +0
5
7, 11, 13, 17, 19, 23, 29, 47, 59, 61, 73, 89, 97, 101, 103, 109, 113, 127, 131, 137, 139, 149, 157, 167, 179, 181, 193, 197, 211, 223, 229, 233, 241, 251, 257, 263, 269, 281, 293, 313, 331, 337, 349, 353, 367, 373, 379, 383, 389, 401, 409, 419, 421, 433 (list; graph; listen)
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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