191189

Properties

Appears in sequences

• Primes which are the reverse concatenation of two consecutive odd numbers.at n=27A104332
• Primes formed from concatenating nextprime(n) and n.at n=16A280357
• a(n) is the smallest prime p whose decimal expansion begins with n and is such that the next prime is p+2n, or -1 if no such prime exists.at n=18A308438
• Prime numbersat n=17262