Q: Is 643,011 a Prime Number?
A: No, 643,011 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 643011 can be evenly divided by 1 3 23 69 9,319 27,957 214,337 and 643,011, with no remainder.
Since 643,011 cannot be divided by just 1 and 643,011, it is not a prime number.