14676481

Appears in sequences

• Carmichael numbers that have only prime divisors of the form 10k+1.at n=18A212843
• Numbers n with record number of primes p such that n*p is a Carmichael number.at n=7A292366
• Carmichael numbers c with record number of primes p such that c*p is also a Carmichael number.at n=4A292367
• Primary Carmichael numbers.at n=23A324316
• Imprimitive Carmichael numbers: Carmichael numbers m such that if m = p_1 * p_2 * ... *p_k is the prime factorization of m then g(m) = gcd(p_1 - 1, ..., p_k - 1) > sqrt(lambda(m)), where lambda is the Carmichael lambda function (A002322).at n=12A328935
• Carmichael numbers k for which the 2-adic valuation of phi(k) does not exceed the 2-adic valuation of k-1.at n=8A339818
• Carmichael numbers k for which bigomega(phi(k)) < bigomega(k-1), where bigomega gives the number of prime divisors, counted with multiplicity.at n=1A339909
• Carmichael numbers k such that k-1 is a Novak-Carmichael number.at n=22A375322