Q: Is 187,640 a Prime Number?
A: No, 187,640 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 187640 can be evenly divided by 1 2 4 5 8 10 20 40 4,691 9,382 18,764 23,455 37,528 46,910 93,820 and 187,640, with no remainder.
Since 187,640 cannot be divided by just 1 and 187,640, it is not a prime number.