Q: Is 518,388 a Prime Number?
A: No, 518,388 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 518388 can be evenly divided by 1 2 3 4 6 12 13 26 39 52 78 156 3,323 6,646 9,969 13,292 19,938 39,876 43,199 86,398 129,597 172,796 259,194 and 518,388, with no remainder.
Since 518,388 cannot be divided by just 1 and 518,388, it is not a prime number.