34657141

Appears in sequences

• Carmichael numbers that have only prime divisors of the form 10k+1.at n=25A212843
• Carmichael numbers k such that the odd part of k-1 is squarefree.at n=23A263403
• Numbers k such that (k-1) mod phi(k) = lambda(k), where phi = A000010 and lambda = A002322.at n=2A290281
• Carmichael numbers m such that A309132(m) < m.at n=25A309268
• Primary Carmichael numbers.at n=33A324316
• Composites that cause a witness to be added to a set of Fermat witnesses: a(n) is the smallest composite number that is not guaranteed composite using Fermat's Little Theorem by the witness A380978(i) for any i < n.at n=26A380979