367804801

Appears in sequences

• Composite numbers k such that phi(k)*lambda(k) divides (k-1)^2, where phi(k) = A000010(k) and lambda(k) = A002322(k).at n=6A277366
• Numbers k such that lambda(k)^3 divides (k-1)^2, where lambda(k) = A002322(k).at n=4A277389
• Numbers n with record number of primes p such that n*p is a Carmichael number.at n=10A292366
• Carmichael numbers c with record number of primes p such that c*p is also a Carmichael number.at n=7A292367
• Starts of runs of 3 consecutive Carmichael numbers (A002997) without a non-prime-power weak Carmichael number (A087442) between any two consecutive members.at n=12A365024