Q: Is 278,625 a Prime Number?
A: No, 278,625 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 278625 can be evenly divided by 1 3 5 15 25 75 125 375 743 2,229 3,715 11,145 18,575 55,725 92,875 and 278,625, with no remainder.
Since 278,625 cannot be divided by just 1 and 278,625, it is not a prime number.