23915494401
domain: N
Appears in sequences
- Composite numbers k such that phi(k) divides p*(k - 1) for some prime factor p of k - 1.at n=5A338998
- Carmichael numbers k such that phi(k) divides p*(k - 1) for some prime factor p of k - 1.at n=2A339878
- Carmichael numbers k for which bigomega(phi(k)) < bigomega(k-1), where bigomega gives the number of prime divisors, counted with multiplicity.at n=26A339909