Q: Is 321,625 a Prime Number?
A: No, 321,625 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 321625 can be evenly divided by 1 5 25 31 83 125 155 415 775 2,075 2,573 3,875 10,375 12,865 64,325 and 321,625, with no remainder.
Since 321,625 cannot be divided by just 1 and 321,625, it is not a prime number.