Q: Is 661,427 a Prime Number?
A: No, 661,427 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 661427 can be evenly divided by 1 13 83 613 1,079 7,969 50,879 and 661,427, with no remainder.
Since 661,427 cannot be divided by just 1 and 661,427, it is not a prime number.