Multiply and Add

Logic Level 4

Given any positive integer nn, let p(n)p(n) be the product of the non-zero digits of nn. If nn has only one digit, then p(n)p(n) is equal to that digit.

Let:S=p(1)+p(2)+p(3)++p(999)Let: S = p(1) + p(2) + p(3) +\ldots + p(999).

What is the largest prime factor of SS?

×

Problem Loading...

Note Loading...

Set Loading...