Q: Is 631,250 a Prime Number?
A: No, 631,250 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 631250 can be evenly divided by 1 2 5 10 25 50 101 125 202 250 505 625 1,010 1,250 2,525 3,125 5,050 6,250 12,625 25,250 63,125 126,250 315,625 and 631,250, with no remainder.
Since 631,250 cannot be divided by just 1 and 631,250, it is not a prime number.