Q: Is 855,921 a Prime Number?
A: No, 855,921 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 855921 can be evenly divided by 1 3 11 33 37 111 407 701 1,221 2,103 7,711 23,133 25,937 77,811 285,307 and 855,921, with no remainder.
Since 855,921 cannot be divided by just 1 and 855,921, it is not a prime number.