104852881

Appears in sequences

• Carmichael numbers which are also base-2 strong pseudoprimes.at n=20A063847
• Strong pseudoprimes (base-2) equal to product of 4 primes not necessarily distinct.at n=24A112451
• Carmichael numbers all of whose prime factors are congruent to 3 modulo 4.at n=19A329468
• Carmichael numbers k for which the 2-adic valuation of phi(k) does not exceed the 2-adic valuation of k-1.at n=17A339818
• Carmichael numbers k such that the multiplicative order of 2 modulo k is odd.at n=4A367231