55247

Appears in sequences

• a(n) = prime(n) * prime(prime(n)).at n=25A073065
• Product of twin-prime-indexed primes and their lower bound twin prime.at n=8A080698
• Numbers k such that sigma(k) - phi(k) is a 4th power.at n=37A115918
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241).at n=25A247689