Q: Is 726,423 a Prime Number?
A: No, 726,423 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 726423 can be evenly divided by 1 3 31 73 93 107 219 321 2,263 3,317 6,789 7,811 9,951 23,433 242,141 and 726,423, with no remainder.
Since 726,423 cannot be divided by just 1 and 726,423, it is not a prime number.