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URL: https://oeis.org/A226530

⇱ A226530 - OEIS

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A226530

Numbers b such that b^(2^15) + 1 is prime (a generalized Fermat prime).

27

1, 70906, 167176, 204462, 249830, 321164, 330716, 332554, 429370, 499310, 524552, 553602, 743788, 825324, 831648, 855124, 999236, 1041870, 1074542, 1096382, 1113768, 1161054, 1167528, 1169486, 1171824, 1210354, 1217284, 1277444, 1519380, 1755378, 1909372, 1922592, 1986700, 2034902, 2147196, 2167350

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OFFSET

1,2

LINKS

Jeppe Stig Nielsen, Table of n, a(n) for n = 1..4346 (all terms below 460*10^6; terms 1..2729 from Ray Chandler)

PrimeGrid, GFN Prime Search Status and History: n=15.

PROG

(PARI) is(b)=isprime(b^2^15+1) \\ Charles R Greathouse IV, Feb 17 2017

CROSSREFS

Cf. A056993, A005574, A000068, A006314, A006313, A006315, A006316, A056994, A056995, A057465, A057002, A088361, A088362, A226528, A226529, A251597, A253854, A244150, A243959, A321323.

Sequence in context: A204482 A186821 A252728 * A215994 A101250 A031865

Adjacent sequences: A226527 A226528 A226529 * A226531 A226532 A226533

KEYWORD

nonn,hard

AUTHOR

Robert G. Wilson v, Jun 09 2013

STATUS

approved