Q: Is 878,423 a Prime Number?
A: No, 878,423 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 878423 can be evenly divided by 1 7 13 49 91 197 343 637 1,379 2,561 4,459 9,653 17,927 67,571 125,489 and 878,423, with no remainder.
Since 878,423 cannot be divided by just 1 and 878,423, it is not a prime number.