Q: Is 312,500 a Prime Number?
A: No, 312,500 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 312500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 625 1,250 2,500 3,125 6,250 12,500 15,625 31,250 62,500 78,125 156,250 and 312,500, with no remainder.
Since 312,500 cannot be divided by just 1 and 312,500, it is not a prime number.