Q: Is 321,020 a Prime Number?
A: No, 321,020 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 321020 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 2,293 4,586 9,172 11,465 16,051 22,930 32,102 45,860 64,204 80,255 160,510 and 321,020, with no remainder.
Since 321,020 cannot be divided by just 1 and 321,020, it is not a prime number.