Q: Is 643,164 a Prime Number?
A: No, 643,164 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 643164 can be evenly divided by 1 2 3 4 6 12 53,597 107,194 160,791 214,388 321,582 and 643,164, with no remainder.
Since 643,164 cannot be divided by just 1 and 643,164, it is not a prime number.