Q: Is 309,500 a Prime Number?
A: No, 309,500 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 309500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 619 1,238 2,476 3,095 6,190 12,380 15,475 30,950 61,900 77,375 154,750 and 309,500, with no remainder.
Since 309,500 cannot be divided by just 1 and 309,500, it is not a prime number.