Q: Is 256,804 a Prime Number?
A: No, 256,804 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 256804 can be evenly divided by 1 2 4 19 31 38 62 76 109 124 218 436 589 1,178 2,071 2,356 3,379 4,142 6,758 8,284 13,516 64,201 128,402 and 256,804, with no remainder.
Since 256,804 cannot be divided by just 1 and 256,804, it is not a prime number.