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Search: id:A125610
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| A125610 |
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Smallest prime p such that 5^n divides p^4 - 1. |
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+0
22
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| 2, 7, 193, 443, 14557, 14557, 735443, 3124999, 7812499, 78124999, 292968749, 853235443, 2441406251, 53834264557, 122070312499, 202513391693, 1118040735443, 3459595983307, 3459595983307, 270488404577057
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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W. Keller and J. Richstein Fermat quotients that are divisible by p.
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PROGRAM
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(PARI) See A125609 - Martin Fuller (martin_n_fuller(AT)btinternet.com), Jan 11 2007
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CROSSREFS
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Cf. A125609 = Smallest prime p such that 3^n divides p^2 - 1. Cf. A125611 = Smallest prime p such that 7^n divides p^6 - 1. Cf. A125612 = Smallest prime p such that 11^n divides p^10 - 1. Cf. A125632 = Smallest prime p such that 13^n divides p^12 - 1. Cf. A125633 = Smallest prime p such that 17^n divides p^16 - 1. Cf. A125634 = Smallest prime p such that 19^n divides p^18 - 1. Cf. A125635 = Smallest prime p such that 257^n divides p^256 - 1.
Sequence in context: A120381 A042359 A015174 this_sequence A096463 A048560 A020459
Adjacent sequences: A125607 A125608 A125609 this_sequence A125611 A125612 A125613
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KEYWORD
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hard,nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Nov 28 2006
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Jan 02 2007
More terms from Martin Fuller (martin_n_fuller(AT)btinternet.com), Jan 11 2007
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