Q: Is 258,129 a Prime Number?
A: No, 258,129 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 258129 can be evenly divided by 1 3 9 23 29 43 69 87 129 207 261 387 667 989 1,247 2,001 2,967 3,741 6,003 8,901 11,223 28,681 86,043 and 258,129, with no remainder.
Since 258,129 cannot be divided by just 1 and 258,129, it is not a prime number.