Q: Is 513,855 a Prime Number?
A: No, 513,855 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 513855 can be evenly divided by 1 3 5 9 15 19 45 57 95 171 285 601 855 1,803 3,005 5,409 9,015 11,419 27,045 34,257 57,095 102,771 171,285 and 513,855, with no remainder.
Since 513,855 cannot be divided by just 1 and 513,855, it is not a prime number.