A062640 Numbers k such that 74^k - 73^k is prime.

23, 193, 811

Offset

1,1

Comments

a(4) > 10^5. - Robert Price, May 23 2014

Links

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

Prog

(PARI) is(n)=ispseudoprime(74^n-73^n) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

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

Sequence in context: A269086 A160083 A140545 * A108646 A307355 A058193

Adjacent sequences: A062637 A062638 A062639 * A062641 A062642 A062643

Keyword

nonn,hard,bref

Author

Mike Oakes, May 18 2001, May 19 2001

Status

approved