8830801
domain: N
Appears in sequences
- Carmichael numbers C such that C-1 is not a Niven/Harshad number.at n=23A097061
- Carmichael numbers divisible by 7.at n=26A182208
- Carmichael numbers divisible by a smaller Carmichael number.at n=10A214758
- Smallest number k such that gcd(phi(k), k-1) = n * lambda(k).at n=7A284089
- Carmichael numbers m such that A309132(m) < m.at n=14A309268
- Carmichael numbers all of whose prime factors are congruent to 3 modulo 4.at n=5A329468
- Carmichael numbers k for which the 2-adic valuation of phi(k) does not exceed the 2-adic valuation of k-1.at n=6A339818