Q: Is 321,740 a Prime Number?
A: No, 321,740 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 321740 can be evenly divided by 1 2 4 5 10 20 16,087 32,174 64,348 80,435 160,870 and 321,740, with no remainder.
Since 321,740 cannot be divided by just 1 and 321,740, it is not a prime number.