Q: Is 1,275,000 a Prime Number?
A: No, 1,275,000 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 1275000 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 3,125 3,400 3,750 4,250 5,000 5,100 6,250 6,375 7,500 8,500 9,375 10,200 10,625 12,500 12,750 15,000 17,000 18,750 21,250 25,000 25,500 31,875 37,500 42,500 51,000 53,125 63,750 75,000 85,000 106,250 127,500 159,375 212,500 255,000 318,750 425,000 637,500 and 1,275,000, with no remainder.
Since 1,275,000 cannot be divided by just 1 and 1,275,000, it is not a prime number.