1618206745

Appears in sequences

• Carmichael numbers k such that sopf(k) is also a Carmichael number, where sopf(k) is the sum of the distinct primes dividing k (A008472).at n=0A329463
• Poulet numbers (Fermat pseudoprimes to base 2) k such that sopfr(k) is also a Poulet number, where sopfr(k) is the sum of the primes dividing k with repetition (A001414).at n=6A329464