24036583

Properties

Appears in sequences

• Mersenne exponents: primes p such that 2^p - 1 is prime. Then 2^p - 1 is called a Mersenne prime.at n=40A000043
• Degrees of primitive irreducible trinomials: n such that 2^n - 1 is a Mersenne prime and x^n + x^k + 1 is a primitive irreducible polynomial over GF(2) for some k with 0 < k < n.at n=24A001153
• Bisection of A000043.at n=20A099982
• Mersenne prime indices that are also Gaussian primes.at n=16A112633
• Duplicate of A112633.at n=16A145039
• Primes p (A000043) such that 2^p-1 is prime (A000668) and congruent to 127 mod 6!.at n=12A145042
• Prime numbers n such that 2^n-1 is prime and can be written in the form a^2+7*b^2.at n=21A216518
• Odious Mersenne exponents.at n=22A237499
• Numbers m such that 2^m + (-1)^m is prime.at n=44A285929
• Greater of twin primes p such that 2^p-1 is prime.at n=11A297674
• Mersenne prime exponents p which are twin primes, so p-2 and/or p+2 is prime.at n=15A346645
• Let M_p = 2^p-1 be a Mersenne prime, where p is an odd prime. Sequence lists p such that b_{p-2} == -2^((p+1)/2) mod M_p, where {b_k} is defined in the Comments.at n=18A354168
• Prime numbersat n=1509263