Q: Is 340,605 a Prime Number?
A: No, 340,605 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 340605 can be evenly divided by 1 3 5 9 15 27 29 45 81 87 135 145 261 405 435 783 841 1,305 2,349 2,523 3,915 4,205 7,569 11,745 12,615 22,707 37,845 68,121 113,535 and 340,605, with no remainder.
Since 340,605 cannot be divided by just 1 and 340,605, it is not a prime number.