2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?

**Running time:** 125ms

**Assessment:** LOL.

public class Problem005 { public static void main(String[] args) { long begin = System.currentTimeMillis(); int i = 20; while (true) { if ( (i % 1 == 0) && (i % 2 == 0) && (i % 3 == 0) && (i % 4 == 0) && (i % 5 == 0) && (i % 6 == 0) && (i % 7 == 0) && (i % 8 == 0) && (i % 9 == 0) && (i % 10 == 0) && (i % 11 == 0) && (i % 12 == 0) && (i % 13 == 0) && (i % 14 == 0) && (i % 15 == 0) && (i % 16 == 0) && (i % 17 == 0) && (i % 18 == 0) && (i % 19 == 0) && (i % 20 == 0) ) { break; } i += 20; } long end = System.currentTimeMillis(); System.out.println(i); System.out.println(end-begin + "ms"); } }