Q: Is 321,888 a Prime Number?
A: No, 321,888 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 321888 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 479 672 958 1,437 1,916 2,874 3,353 3,832 5,748 6,706 7,664 10,059 11,496 13,412 15,328 20,118 22,992 26,824 40,236 45,984 53,648 80,472 107,296 160,944 and 321,888, with no remainder.
Since 321,888 cannot be divided by just 1 and 321,888, it is not a prime number.