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A062628 Numbers n such that 62^n - 61^n is prime. 0
17, 23, 421, 1303, 6163, 17117, 18439, 74521 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Terms greater than 1000 are often only strong pseudoprimes.

All terms are primes. - Robert Price, May 07 2013

a(9) > 10^5. - Robert Price, May 07 2013

LINKS

Table of n, a(n) for n=1..8.

PROG

(PARI) is(n)=ispseudoprime(62^n-61^n) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

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

Sequence in context: A127924 A250640 A108260 * A127907 A070687 A205697

Adjacent sequences:  A062625 A062626 A062627 * A062629 A062630 A062631

KEYWORD

nonn,hard

AUTHOR

Mike Oakes, May 18 2001, May 19 2001

EXTENSIONS

a(6)-a(8) (Computer runs by Adam Marciniec) from Robert Price, May 07 2013

STATUS

approved

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Last modified November 12 16:50 EST 2018. Contains 317116 sequences. (Running on oeis4.)