Q: Is 855,426 a Prime Number?
A: No, 855,426 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 855426 can be evenly divided by 1 2 3 6 11 13 22 26 33 39 66 78 143 286 429 858 997 1,994 2,991 5,982 10,967 12,961 21,934 25,922 32,901 38,883 65,802 77,766 142,571 285,142 427,713 and 855,426, with no remainder.
Since 855,426 cannot be divided by just 1 and 855,426, it is not a prime number.