Q: Is 145,280 a Prime Number?
A: No, 145,280 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 145280 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 227 320 454 640 908 1,135 1,816 2,270 3,632 4,540 7,264 9,080 14,528 18,160 29,056 36,320 72,640 and 145,280, with no remainder.
Since 145,280 cannot be divided by just 1 and 145,280, it is not a prime number.