22849481

Appears in sequences

• Lesser of overpseudo-twin-primes to base 2 defined in Comment.at n=22A195468
• Strong pseudoprimes (base 2) that become prime when two is added.at n=10A230484
• Composite numbers k such that 2^(2^(k-1)-1) == 1 (mod k^2).at n=24A376253