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A171629
Numbers n such that 10^n*(5+3*10^n)+3 is prime.
0
0, 1, 5, 9, 11, 15, 6413, 6741
OFFSET
1,3
COMMENTS
Values corresponding to n=6413 and n=6741 were both certified Fermat and Lucas PRPs with WinPFGW and submitted to Lifchitz's Top PRPs database.
PROG
(PARI) is(n)=ispseudoprime(10^n*(5+3*10^n)+3) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A122062 A314593 A137011 * A102178 A337657 A314594
KEYWORD
more,nonn
AUTHOR
Jason Earls, Dec 13 2009
STATUS
approved