13757653

Appears in sequences

• Pseudoprimes (base-2) equal to the product of 5 primes not necessarily distinct.at n=23A112443
• Base-2 Fermat pseudoprimes k such that (k-1)/ord(2, k) > (m-1)/ord(2, m) for all base-2 Fermat pseudoprimes m < k, where ord(2, k) is the multiplicative order of 2 modulo k.at n=29A367319