168505

Appears in sequences

• Composite numbers k such that if k = a U b (where U denotes concatenation) then a' + b' = k', where a', b' and k' are the arithmetic derivatives of a, b and k.at n=24A239724
• Composite numbers k = concat(MSD(k),x) such that k' = x', where k' is the arithmetic derivative of k.at n=24A293477
• First differences of A325056: distance in A076042 from n-th low point to the next.at n=20A324792