188516329
domain: N
Appears in sequences
- Odd squarefree composite numbers k such that p-1 divides k-1 and p-1 does not divide (k-1)/2 for every prime p|k.at n=16A329799
- Carmichael numbers ending in 9.at n=24A352970
- Carmichael numbers with exactly 3 prime factors, p*q*r, such that p-1, q-1 and r-1 have an equal 2-adic valuation.at n=16A382791