Q: Is 258,858 a Prime Number?
A: No, 258,858 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 258858 can be evenly divided by 1 2 3 6 9 18 73 146 197 219 394 438 591 657 1,182 1,314 1,773 3,546 14,381 28,762 43,143 86,286 129,429 and 258,858, with no remainder.
Since 258,858 cannot be divided by just 1 and 258,858, it is not a prime number.