Q: Is 921,431 a Prime Number?
A: No, 921,431 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 921431 can be evenly divided by 1 7 139 947 973 6,629 131,633 and 921,431, with no remainder.
Since 921,431 cannot be divided by just 1 and 921,431, it is not a prime number.