Q: Is 258,375 a Prime Number?
A: No, 258,375 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 258375 can be evenly divided by 1 3 5 13 15 25 39 53 65 75 125 159 195 265 325 375 689 795 975 1,325 1,625 2,067 3,445 3,975 4,875 6,625 10,335 17,225 19,875 51,675 86,125 and 258,375, with no remainder.
Since 258,375 cannot be divided by just 1 and 258,375, it is not a prime number.