Q: Is 340,840 a Prime Number?
A: No, 340,840 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 340840 can be evenly divided by 1 2 4 5 8 10 20 40 8,521 17,042 34,084 42,605 68,168 85,210 170,420 and 340,840, with no remainder.
Since 340,840 cannot be divided by just 1 and 340,840, it is not a prime number.