Q: Is 643,180 a Prime Number?
A: No, 643,180 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 643180 can be evenly divided by 1 2 4 5 10 20 32,159 64,318 128,636 160,795 321,590 and 643,180, with no remainder.
Since 643,180 cannot be divided by just 1 and 643,180, it is not a prime number.