124483

Appears in sequences

• Vampire numbers (definition 2): numbers n with an even number of digits which have a factorization n = i*j where i and j have the same number of digits and the multiset of the digits of n coincides with the multiset of the digits of i and j.at n=20A014575
• Composites that use the same digits as their prime factorization.at n=17A025283
• 1, together with numbers n that are the product of two primes p and q such that the multiset of the digits of n coincides with the multiset of the digits of p and q.at n=10A080718
• Composite numbers having the same digits as their prime factors (with multiplicity), excluding zero digits.at n=16A176670
• Composite numbers having the same digits as their prime factors (with multiplicity), including zero digits.at n=9A280928
• Prime vampire numbers: semiprimes x*y such that x and y have the same number of digits and the union of the multisets of the digits of x and y is the same as the multiset of digits of x*y.at n=1A289911
• Number of pairs (lambda,mu) of partitions lambda of n and mu of five with mu <= lambda (by diagram containment).at n=31A303855
• Composite numbers that are anagrams of the concatenation of their prime factors.at n=29A306474