A062592 Numbers k such that 26^k - 25^k is prime or a strong pseudoprime.

3, 7, 97, 109, 401, 431

Offset

1,1

Comments

a(7) > 10^5. - Robert Price, Nov 10 2012

Links

Table of n, a(n) for n=1..6.

Crossrefs

Cf. A000043, A057468, A059801, A059802, A062572-A062589, A214658, A214655, A062593-A062666.

Sequence in context: A307661 A177495 A088419 * A074349 A159310 A362682

Adjacent sequences: A062589 A062590 A062591 * A062593 A062594 A062595

Keyword

nonn,hard

Author

Mike Oakes, May 18 2001, May 19 2001

Extensions

Edited by M. F. Hasler, Sep 21 2013

Status

approved