Q: Is 255,000 a Prime Number?
A: No, 255,000 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 255000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 17 20 24 25 30 34 40 50 51 60 68 75 85 100 102 120 125 136 150 170 200 204 250 255 300 340 375 408 425 500 510 600 625 680 750 850 1,000 1,020 1,250 1,275 1,500 1,700 1,875 2,040 2,125 2,500 2,550 3,000 3,400 3,750 4,250 5,000 5,100 6,375 7,500 8,500 10,200 10,625 12,750 15,000 17,000 21,250 25,500 31,875 42,500 51,000 63,750 85,000 127,500 and 255,000, with no remainder.
Since 255,000 cannot be divided by just 1 and 255,000, it is not a prime number.