Q: Is 249,640 a Prime Number?
A: No, 249,640 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 249640 can be evenly divided by 1 2 4 5 8 10 20 40 79 158 316 395 632 790 1,580 3,160 6,241 12,482 24,964 31,205 49,928 62,410 124,820 and 249,640, with no remainder.
Since 249,640 cannot be divided by just 1 and 249,640, it is not a prime number.