Q: Is 513,891 a Prime Number?
A: No, 513,891 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 513891 can be evenly divided by 1 3 7 9 21 27 63 189 2,719 8,157 19,033 24,471 57,099 73,413 171,297 and 513,891, with no remainder.
Since 513,891 cannot be divided by just 1 and 513,891, it is not a prime number.