Integers n such that 10^n-11 is a prime number.

Duplicate of A092767.

0,1,1

324, 504, 594, 983 and 2894 are only probable primes. No others less than 5000.

324, 504, 594 & 983 are certified prime by Primo. - Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 01 2005

n = 5 is a member because 10^5-11 = 100000-11 = 99989, which is prime.

Do[ If[ PrimeQ[10^n - 11], Print[n]], {n, 3000}] (from Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 01 2005)

Cf. A089675, A095714.

hard,more,nonn,new

dead

Julien Peter Benney (jpbenney(AT)ftml.net), Jun 29 2005

324, 504, 594 & 983 are certified prime by Primo. - RGWv Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 01 2005

Do[ If[ PrimeQ[10^n - 11], Print[n]], {n, 3000}] (from RGWv Robert G. Wilson v (rgwv@(AT)rgwv.com), Jul 01 2005)

hard,more,nonn,new

Integers n such that 10^n-11 is a prime number.

2, 5, 8, 12, 15, 18, 20, 30, 80, 143, 152, 164, 176, 239, 291, 324, 504, 594, 983, 2894

0,1

324, 504, 594, 983 and 2894 are only probable primes. No others less than 5000.

324, 504, 594 & 983 are certified prime by Primo. - RGWv (rgwv(AT)rgwv.com), Jul 01 2005

n = 5 is a member because 10^5-11 = 100000-11 = 99989, which is prime.

Do[ If[ PrimeQ[10^n - 11], Print[n]], {n, 3000}] (from RGWv ([email protected]), Jul 01 2005)

Cf. A089675, A095714.

hard,more,nonn

Julien Peter Benney (jpbenney(AT)ftml.net), Jun 29 2005

approved