2284453

Appears in sequences

• Strong pseudoprimes to bases 2 and 3.at n=3A072276
• Brilliant Sarrus numbers.at n=28A086837
• Composite numbers k congruent to 5 (mod 8) such that 2^((k-1)/2) mod k = k-1.at n=21A244626
• Record values in A265388.at n=39A265395
• Fermat pseudoprimes to base 2 that are triangular.at n=31A293622
• Fermat pseudoprimes to base 2 that are hexagonal.at n=30A322130
• a(n) is the smallest Fermat pseudoprime to base 2 such that gpf(p-1) = prime(n) for all prime factors p of a(n).at n=23A327789
• Numbers that are super pseudoprimes to both bases 2 and 3.at n=22A333130