290912

Appears in sequences

• Treated as strings, the concatenation c of the prime factors of n, in increasing order, is an initial segment of n. Equivalently, n begins with c.at n=17A069154
• 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=7A083359
• Subsequence of sequence A083359 in which factors do not overlap in the number.at n=3A083360
• Conceited Numbers: Composite numbers that are a concatenation of their distinct prime factors with multiplicity in some order allowing overlap.at n=8A324257
• Subsequence of A324257 (Conceited Numbers) where the prime factors are concatenated without overlap.at n=4A324258