A062626 Numbers k such that 60^k - 59^k is prime.

4663, 8839, 14779

Offset

1,1

Comments

Terms greater than 1000 often correspond only to strong pseudoprimes. [Clarified by M. F. Hasler, Sep 15 2013]

a(4) > 10^5. - Robert Price, Mar 01 2013

Links

Table of n, a(n) for n=1..3.

H. Lifchitz, R. Lifchitz, PRP top records (of the form 60^n-59^n)

Prog

(PARI) is(n)=ispseudoprime(60^n-59^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A000043, A057468, A059801, A059802, A062572-A062666.

Sequence in context: A159220 A020422 A048131 * A204489 A252127 A188364

Adjacent sequences: A062623 A062624 A062625 * A062627 A062628 A062629

Keyword

nonn,hard,bref

Author

Mike Oakes, May 18 2001, May 19 2001

Extensions

a(3) from Robert Price, Mar 01 2013

Status

approved