656599

Properties

Appears in sequences

• Primes with a twin Carmichael number: primes p such that p-2 or p+2 are Carmichael numbers.at n=14A135437
• Numbers k such that at least one of k and k+2 is composite, while for every b coprime to k*(k+2), b^(k-1) == 1 (mod k) and b^(k+1) == 1 (mod k+2).at n=14A194231
• Smallest sets of 3 consecutive odd numbers that are primes or pseudoprimes (base 2). The initial odd number is listed.at n=13A230808
• Primes p such that p + 2 is a Carmichael number (A002997).at n=12A272754
• Prime numbersat n=53312