Primes p such that gcd(p, prime(p)^2 - 1) does not equal 1.

A064936

Primes p such that gcd(p, prime(p)^2 - 1) does not equal 1.

Terms

    a(0) =2a(1) =3a(2) =5a(3) =181a(4) =40087a(5) =251737

External references