Q: Is 521,328 a Prime Number?
A: No, 521,328 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 521328 can be evenly divided by 1 2 3 4 6 8 12 16 24 48 10,861 21,722 32,583 43,444 65,166 86,888 130,332 173,776 260,664 and 521,328, with no remainder.
Since 521,328 cannot be divided by just 1 and 521,328, it is not a prime number.