145109

Properties

Appears in sequences

• Primes of the form 2m*691 - 1.at n=20A134671
• Sophie Germain primes p surrounded by Sophie Germain primes.at n=4A171161
• Define Sophie Germain isolated primes to be primes p such that 2p+1 is also prime and so that p-2 and p+2 are not primes. The sequence contains Sophie Germain isolated primes p such that the previous prime to p and the succeeding prime to p are both also Sophie Germain isolated primes.at n=1A171162
• Primes p with A047967(p) also prime.at n=29A236418
• Primes q such that 15*q-4, 15*q-2, 15*q+2 and 15*q+4 are all primes.at n=34A342717
• Prime numbersat n=13432