Q: Is 1,321,750 a Prime Number?
A: No, 1,321,750 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 1321750 can be evenly divided by 1 2 5 10 17 25 34 50 85 125 170 250 311 425 622 850 1,555 2,125 3,110 4,250 5,287 7,775 10,574 15,550 26,435 38,875 52,870 77,750 132,175 264,350 660,875 and 1,321,750, with no remainder.
Since 1,321,750 cannot be divided by just 1 and 1,321,750, it is not a prime number.