121453

Properties

Appears in sequences

• Primes of the form p^k - p + 1 for prime p.at n=27A034915
• Primes of the form p^2 - p + 1 where p is prime.at n=11A074268
• Primes of the form p^k - p^(k-1) + 1 for some prime p and integer k > 1.at n=26A087126
• Primes of the form p^e - p^(e-1) + p^(e-2) - ... + (-1)^e, where p is prime.at n=21A127727
• Primes of the form (p! + q!)/ p! where p= prime(k) and q= prime(k+1), in order of increasing k.at n=5A235392
• Consider N = numerator( 1/p! + 1/q! ) where p = prime(n), q = prime(n+1) for n = 1,2,3,.... Append N to sequence if it is a prime.at n=24A235714
• Primes of form x^2 - phi(x) in increasing order.at n=24A258435
• Odd primes p with the property that gcd(ord_p q: prime q divides p-1) = 1.at n=33A295975
• Primes of the form 9*k^2 + 3*k + 1.at n=35A303740
• Prime numbersat n=11431