Q: Is 145,820 a Prime Number?
A: No, 145,820 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 145820 can be evenly divided by 1 2 4 5 10 20 23 46 92 115 230 317 460 634 1,268 1,585 3,170 6,340 7,291 14,582 29,164 36,455 72,910 and 145,820, with no remainder.
Since 145,820 cannot be divided by just 1 and 145,820, it is not a prime number.