Q: Is 617,643 a Prime Number?
A: No, 617,643 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 617643 can be evenly divided by 1 3 9 13 39 117 5,279 15,837 47,511 68,627 205,881 and 617,643, with no remainder.
Since 617,643 cannot be divided by just 1 and 617,643, it is not a prime number.