1275681

Appears in sequences

• Pseudoprimes (base-2) equal to the product of 5 primes not necessarily distinct.at n=2A112443
• Sarrus numbers that become prime when two is added.at n=23A137198
• Fermat pseudoprimes to base 2 that can be written as p^2*n - p*n + p, where p is also a Fermat pseudoprime to base 2 and n is a positive integer.at n=3A217835
• Pseudoprimes to a twin prime criterion of Aebi and Cairns.at n=24A224695