Q: Is 309,872 a Prime Number?
A: No, 309,872 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 309872 can be evenly divided by 1 2 4 8 16 107 181 214 362 428 724 856 1,448 1,712 2,896 19,367 38,734 77,468 154,936 and 309,872, with no remainder.
Since 309,872 cannot be divided by just 1 and 309,872, it is not a prime number.