Q: Is 361,640 a Prime Number?
A: No, 361,640 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 361640 can be evenly divided by 1 2 4 5 8 10 20 40 9,041 18,082 36,164 45,205 72,328 90,410 180,820 and 361,640, with no remainder.
Since 361,640 cannot be divided by just 1 and 361,640, it is not a prime number.