Q: Is 305,000 a Prime Number?
A: No, 305,000 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 305000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 61 100 122 125 200 244 250 305 488 500 610 625 1,000 1,220 1,250 1,525 2,440 2,500 3,050 5,000 6,100 7,625 12,200 15,250 30,500 38,125 61,000 76,250 152,500 and 305,000, with no remainder.
Since 305,000 cannot be divided by just 1 and 305,000, it is not a prime number.