Q: Is 423,255 a Prime Number?
A: No, 423,255 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 423255 can be evenly divided by 1 3 5 7 15 21 29 35 87 105 139 145 203 417 435 609 695 973 1,015 2,085 2,919 3,045 4,031 4,865 12,093 14,595 20,155 28,217 60,465 84,651 141,085 and 423,255, with no remainder.
Since 423,255 cannot be divided by just 1 and 423,255, it is not a prime number.