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A171411
Numbers k such that 1 + 5*10^k + 100^k is prime.
5
0, 1, 2, 4, 5, 8, 27, 165, 230, 237, 369, 485, 628, 875, 964, 1419, 4083
OFFSET
1,3
COMMENTS
No more terms up to k=7600. The value corresponding to 4083 was certified prime with WinPFGW.
PROG
(PARI) is(n)=ispseudoprime(1+5*10^n+100^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Jason Earls, Dec 08 2009
STATUS
approved