Q: Is 1,278,000 a Prime Number?
A: No, 1,278,000 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 1278000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 36 40 45 48 50 60 71 72 75 80 90 100 120 125 142 144 150 180 200 213 225 240 250 284 300 355 360 375 400 426 450 500 568 600 639 710 720 750 852 900 1,000 1,065 1,125 1,136 1,200 1,278 1,420 1,500 1,704 1,775 1,800 2,000 2,130 2,250 2,556 2,840 3,000 3,195 3,408 3,550 3,600 4,260 4,500 5,112 5,325 5,680 6,000 6,390 7,100 8,520 8,875 9,000 10,224 10,650 12,780 14,200 15,975 17,040 17,750 18,000 21,300 25,560 26,625 28,400 31,950 35,500 42,600 51,120 53,250 63,900 71,000 79,875 85,200 106,500 127,800 142,000 159,750 213,000 255,600 319,500 426,000 639,000 and 1,278,000, with no remainder.
Since 1,278,000 cannot be divided by just 1 and 1,278,000, it is not a prime number.