126839

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 2x + 1.at n=8A023302
• Primes of the form 4*k-1 such that 8*k-1, 16*k-1 and 32*k-1 are also primes.at n=20A101795
• Primes of the form 8*k-1 such that 4*k-1, 16*k-1 and 32*k-1 are also primes.at n=9A101796
• Primes of the form 4*k-1 such that 8*k-1, 16*k-1, 32*k-1 and 64*k-1 are also primes.at n=3A101995
• Primes of the form 8*k-1 such that 4*k-1, 16*k-1, 32*k-1 and 64*k-1 are also primes.at n=2A101996
• Numbers k such that 3*R_(k+2) + 2*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=29A256788
• Primes p such that A272207(p) = p.at n=37A276030
• Number of non-isomorphic multiset partitions of weight n whose part-sizes have a common divisor > 1.at n=14A320810
• Primes 2*p*q-2*q*r+r*s where p,q,r,s are consecutive primes.at n=22A341937
• Prime numbersat n=11891