A062629 Numbers k such that 63^k - 62^k is prime.

3, 59, 3499, 3571

Offset

1,1

Comments

Terms greater than 1000 are often only strong pseudoprimes.

a(5) > 10^5. - Robert Price, Jun 05 2013

Links

Table of n, a(n) for n=1..4.

Prog

(PARI) is(n)=ispseudoprime(63^n-62^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

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

Sequence in context: A013526 A305597 A369949 * A184953 A185153 A215609

Adjacent sequences: A062626 A062627 A062628 * A062630 A062631 A062632

Keyword

nonn,hard

Author

Mike Oakes, May 18 2001, May 19 2001

Status

approved