Q: Is 643,498 a Prime Number?
A: No, 643,498 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 643498 can be evenly divided by 1 2 31 62 97 107 194 214 3,007 3,317 6,014 6,634 10,379 20,758 321,749 and 643,498, with no remainder.
Since 643,498 cannot be divided by just 1 and 643,498, it is not a prime number.