Q: Is 321,560 a Prime Number?
A: No, 321,560 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 321560 can be evenly divided by 1 2 4 5 8 10 20 40 8,039 16,078 32,156 40,195 64,312 80,390 160,780 and 321,560, with no remainder.
Since 321,560 cannot be divided by just 1 and 321,560, it is not a prime number.