Q: Is 278,502 a Prime Number?
A: No, 278,502 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 278502 can be evenly divided by 1 2 3 6 7 14 19 21 38 42 57 114 133 266 349 399 698 798 1,047 2,094 2,443 4,886 6,631 7,329 13,262 14,658 19,893 39,786 46,417 92,834 139,251 and 278,502, with no remainder.
Since 278,502 cannot be divided by just 1 and 278,502, it is not a prime number.