A154526 Primes p such that lcm(1,2,3,...,p-2,p-1,p) -+ 1 are both primes.

3, 5, 7, 19, 47

Offset: 1

Author

Lekraj Beedassy, Jan 11 2009

Keywords

• more
• nonn

Comments

Intersection of A154524 and A154525.

Crossrefs

Cf. A056604, A154524, A154525.

Programs

PARI

isok(p) = {if (! isprime(p), return (0)); lcmv = lcm(vector(p, i, i)); isprime(lcmv + 1) && isprime(lcmv - 1);} \\ Michel Marcus, Oct 26 2013