Q: Is 743,638 a Prime Number?
A: No, 743,638 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 743638 can be evenly divided by 1 2 7 14 53,117 106,234 371,819 and 743,638, with no remainder.
Since 743,638 cannot be divided by just 1 and 743,638, it is not a prime number.