Q: Is 420,315 a Prime Number?
A: No, 420,315 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 420315 can be evenly divided by 1 3 5 7 15 21 35 105 4,003 12,009 20,015 28,021 60,045 84,063 140,105 and 420,315, with no remainder.
Since 420,315 cannot be divided by just 1 and 420,315, it is not a prime number.