267017

Properties

Appears in sequences

• Wagstaff numbers: numbers k such that (2^k + 1)/3 is prime.at n=36A000978
• Indices of prime Jacobsthal numbers.at n=37A107036
• Numbers n such that (2^n+1)/3 is prime, but cannot be written in the form a^2 + 3*b^2.at n=19A216551
• Numbers k such that (2^k + 1)/(2 - (-1)^k) is a prime.at n=41A280083
• Wagstaff numbers that are of the form 4*k + 1.at n=13A361563
• Prime numbersat n=23396