23561015

Appears in sequences

• If n is composite, replace n with the concatenation of its nontrivial divisors, otherwise a(n) = n.at n=29A037279
• If n is composite replace n with the concatenation of its nontrivial divisors [ A037279 ] then divide out any factors of 2.at n=29A037280
• a(n) is the concatenation of its nontrivial divisors.at n=29A106708
• Records in A106708.at n=9A131983