167979421

Appears in sequences

• Carmichael numbers of the form n*(2*n - 1)*(p*n - p + 1)*(2*p*n - 2*p + 1), where p is odd, p from 3 to 23.at n=3A212882
• Carmichael numbers that are the average of two consecutive primes.at n=18A265669
• Least imprimitive Carmichael number (A328935) with n prime factors, or -1 if no such number exists.at n=1A328938