9613297

Appears in sequences

• Fermat pseudoprimes to base 2 that can be written as p^2*n - p*n + p, where p is also a Fermat pseudoprime to base 2 and n is a positive integer.at n=7A217835
• Numbers n > 2 such that A258409(n)*A002322(n) divides n-1.at n=17A284671
• Carmichael numbers k such that phi(k) divides (k-1)*lambda(k).at n=24A306338
• Carmichael numbers ending in 7.at n=5A355307
• The greater of twin Carmichael numbers: a pair of consecutive Carmichael numbers (A002997) without a non-prime-power weak Carmichael number (A087442) between them.at n=15A365023