236653

Properties

Appears in sequences

• Restricted left truncatable (Henry VIII) primes.at n=33A055521
• Left-truncatable primes p with property that prepending any single decimal digit to p does not produce a prime.at n=35A240768
• a(1) is the smallest prime p such that 6*p^2-1 and 6*p^2+1 are twin primes; for n > 1, a(n) is the smallest prime q > a(n-1) such that 6*q^prime(n)-1 and 6*q^prime(n)+1 are twin primes or 0 if no solution exists.at n=9A327581
• Prime numbersat n=20953