Q: Is 398,320 a Prime Number?
A: No, 398,320 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 398320 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 383 520 766 1,040 1,532 1,915 3,064 3,830 4,979 6,128 7,660 9,958 15,320 19,916 24,895 30,640 39,832 49,790 79,664 99,580 199,160 and 398,320, with no remainder.
Since 398,320 cannot be divided by just 1 and 398,320, it is not a prime number.