79411201

Appears in sequences

• Carmichael numbers k for which A053575(k) [the odd part of phi] divides k-1.at n=25A339869
• 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=29A380979