Q: Is 813,820 a Prime Number?
A: No, 813,820 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 813820 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 5,813 11,626 23,252 29,065 40,691 58,130 81,382 116,260 162,764 203,455 406,910 and 813,820, with no remainder.
Since 813,820 cannot be divided by just 1 and 813,820, it is not a prime number.