31407

Appears in sequences

• Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 1 skipped prime.at n=19A050768
• Numbers D such that D^2 = A^3 + B^4 + C^5 has more than one solution in positive integers (A, B, C).at n=17A256603
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=30A387159