143643

Appears in sequences

• a(1) = 10, a(n) = concatenation of two closest factors of a(n-1) whose product equals a(n-1) or if a(n-1) is a prime then the concatenation of 1 and a(n-1).at n=9A063424
• Terms in A061725 that are of form 3*prime.at n=22A133395