127679

Properties

Appears in sequences

• Number of divisors d of n! such that d-1 is prime.at n=27A156190
• Lesser member p of a twin prime pair (p, p + 2) such that 2p + 3(p + 2) is a perfect square.at n=13A174370
• Primes p with p + 2, prime(p) + 2 and prime(prime(p)) + 2 all prime.at n=18A236481
• Numbers m such that m-2, m-1, m+1, m+2 cannot all be represented in the form x*y + x + y for values x, y with x >= y > 1.at n=22A256386
• Inert rational primes in the intersection of all Q(sqrt(-d)) where d is a Heegner number.at n=22A309024
• Emirps that can be written as p*q+p+q where p and q are emirps.at n=33A352249
• Prime numbersat n=11958