Q: Is 345,640 a Prime Number?
A: No, 345,640 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 345640 can be evenly divided by 1 2 4 5 8 10 20 40 8,641 17,282 34,564 43,205 69,128 86,410 172,820 and 345,640, with no remainder.
Since 345,640 cannot be divided by just 1 and 345,640, it is not a prime number.