3375487domain: NAppears in sequencesOdd composite numbers k for which k = A140607((k-1)/2).at n=14A140667Poulet numbers of the form (6k+1)*(24k+1).at n=14A182123Fermat pseudoprimes (A001567) that are the sum of three consecutive primes.at n=19A270639Numbers that are super pseudoprimes to both bases 2 and 3.at n=29A333130