Q: Is 321,550 a Prime Number?
A: No, 321,550 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 321550 can be evenly divided by 1 2 5 10 25 50 59 109 118 218 295 545 590 1,090 1,475 2,725 2,950 5,450 6,431 12,862 32,155 64,310 160,775 and 321,550, with no remainder.
Since 321,550 cannot be divided by just 1 and 321,550, it is not a prime number.