12945745

Appears in sequences

• Carmichael numbers equal to the product of 5 primes.at n=4A112428
• Pseudoprimes (base-2) equal to the product of 5 primes not necessarily distinct.at n=22A112443
• Carmichael numbers k such that Euler totient function of k (phi(k)) is a perfect square.at n=13A272798
• Numbers n > 2 such that A258409(n)*A002322(n) divides n-1.at n=21A284671
• Carmichael numbers ending in 5.at n=15A355305
• Carmichael numbers k such that (k-1)/lambda(k) > (m-1)/lambda(m) for all Carmichael numbers m < k, where lambda is the Carmichael lambda function (A002322).at n=12A367320