40693

Properties

Appears in sequences

• Primes p such that |p - q| is a square, where q is the reversal of p.at n=40A059798
• a(n) = 2*p + 2*n - 1, where p is the least prime such that next_prime(2*p) - 2*p = 2*n - 1.at n=23A059847
• List of Ormiston prime pairs.at n=25A072274
• Non-palindromic primes which on subtracting their reversal give perfect squares.at n=19A080177
• Numbers k such that k, k+1, k+2 and k+3 are 1,2,3,4-almost primes.at n=34A113000
• Primes p such that the prime triple (p, p+2 or p+4, p+6) generates a prime number when the digits are concatenated.at n=35A375313
• Prime numbersat n=4261