141079

Properties

Appears in sequences

• Wagstaff numbers: numbers k such that (2^k + 1)/3 is prime.at n=35A000978
• Indices of prime Jacobsthal numbers.at n=36A107036
• Divide primes in groups with 2n+1 elements and add together.at n=21A109725
• Numbers n such that (2^n+1)/3 is prime and can be written in the form a^2 + 3*b^2.at n=15A216550
• Numbers k such that (2^k + 1)/(2 - (-1)^k) is a prime.at n=40A280083
• Wagstaff numbers that are of the form 4*k + 3.at n=22A361562
• Prime numbersat n=13103