31373137

Appears in sequences

• Visible factor numbers (VFNs): composite numbers k with the property that every prime factor of k can be found in the decimal expansion of k and every digit of k can be covered by a prime factor.at n=21A083359
• Subsequence of sequence A083359 in which every prime factor can be found in the number at least as often as it is factor of the number.at n=5A083361
• Subsequence of A324257 (Conceited Numbers) where every prime factor is visible in the number, not just each distinct prime factor.at n=7A324259
• Subsequence of A324257 (Conceited Numbers) where the distinct prime factors are concatenated without multiplicity.at n=10A324260
• Subsequence of A083359 (Visual Factor Numbers) of the form (10^m+1)*p, where the decimal representation of prime p contains all the prime factors of 10^m+1.at n=1A324261
• Numbers that are a proper substring of the concatenation (with repetition) in increasing order of their prime factors.at n=8A378893