Q: Is 129,428 a Prime Number?
A: No, 129,428 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 129428 can be evenly divided by 1 2 4 13 19 26 38 52 76 131 247 262 494 524 988 1,703 2,489 3,406 4,978 6,812 9,956 32,357 64,714 and 129,428, with no remainder.
Since 129,428 cannot be divided by just 1 and 129,428, it is not a prime number.