38624041

Appears in sequences

• Carmichael numbers which are also base-2 strong pseudoprimes.at n=15A063847
• Strong pseudoprimes (base-2) equal to product of 4 primes not necessarily distinct.at n=13A112451
• Carmichael numbers m such that A309132(m) < m.at n=27A309268
• The lesser of twin Carmichael numbers: a pair of consecutive Carmichael numbers (A002997) without a non-prime-power weak Carmichael number (A087442) between them.at n=24A365022
• Carmichael numbers k such that k-1 is a Novak-Carmichael number.at n=29A375322