A062655 Numbers k such that 89^k - 88^k is prime.

3, 5, 997, 4253, 52511, 59221

Offset: 1

Author

Mike Oakes, May 18 2001, May 19 2001

Keywords

• nonn
• hard

Comments

Terms greater than 1000 are often only strong pseudoprimes.

a(7) > 10^5. - Robert Price, Jun 16 2015

Crossrefs

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

Programs

Mathematica

Select[Range[0, 100000], PrimeQ[89^# - 88^#] &] (* Robert Price, Jun 16 2015 *)

PARI

is(n)=ispseudoprime(89^n-88^n) \\ Charles R Greathouse IV, Jun 12 2017

Extensions

a(5)-a(6) from Robert Price (computer run by Adam Marciniec), Jun 16 2015