775949

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 2x + 1.at n=27A023302
• Initial (unsafe) primes of Cunningham chains of first type with length exactly 5. Primes in A059453 that survive as primes just four "2p+1 iterations", forming chains of exactly 5 terms.at n=20A059764
• Numbers n such that n, 2n+1, 3n+2, 4n+3, 5n+4 are primes.at n=21A067258
• Prime numbersat n=62168