A322749 Primes in A032420.

3, 5, 7, 31, 37, 41, 61, 103, 137, 2053, 125887, 968467

Offset: 1

Author

Muniru A Asiru, Dec 25 2018

Keywords

• nonn
• more

Comments

Equivalently, primes p such that 141*2^p+1 is prime.

Crossrefs

Subsequence of A032420.

Programs

GAP

Filtered([1..400],p->IsPrime(p) and IsPrime(141*2^p+1));

Maple

select(p->isprime(p) and isprime(141*2^p+1),[$1..400]);

Mathematica

Select[Prime[Range[140]],PrimeQ[141*2^#+1]&] (* Harvey P. Dale, Sep 04 2023 *)