Q: Is 921,391 a Prime Number?
A: No, 921,391 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 921391 can be evenly divided by 1 467 1,973 and 921,391, with no remainder.
Since 921,391 cannot be divided by just 1 and 921,391, it is not a prime number.