125413

Appears in sequences

• Numbers k such that 5*2^k + 1 is prime.at n=18A002254
• Numbers k such that 5*2^k + 1 is a prime factor of a Fermat number 2^(2^m) + 1 for some m.at n=8A226366
• Numbers n such that 5*2^n + 1 is a prime factor of a generalized Fermat number 5^(2^m) + 1 for some m.at n=12A268662
• Numbers k such that 5*2^k + 1 is a prime factor of a generalized Fermat number 11^(2^m) + 1 for some m.at n=2A282946