data/problems/160.yml
---
:id: 160
:name: Factorial trailing digits
:url: https://projecteuler.net/problem=160
:content: "For any N, let f(N) be the last five digits before the trailing zeroes
in N!. \nFor example,\n\n9! = 362880 so f(9)=36288 \n10! = 3628800 so f(10)=36288
\ \n20! = 2432902008176640000 so f(20)=17664\n\nFind f(1,000,000,000,000)\n\n"