240641

Properties

Appears in sequences

• Primes that remain prime through 5 iterations of the function f(x) = 9x + 4.at n=16A023353
• Primes p with p-1, p+1, prime(p)-1 and prime(p)+1 all practical.at n=31A257924
• a(n) is the largest prime factor of 2^p - p^2 where p is the n-th prime.at n=7A350964
• Prime numbersat n=21273