A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7001500 can be evenly divided by 1 2 4 5 10 11 19 20 22 25 38 44 50 55 67 76 95 100 110 125 134 190 209 220 250 268 275 335 380 418 475 500 550 670 737 836 950 1,045 1,100 1,273 1,340 1,375 1,474 1,675 1,900 2,090 2,375 2,546 2,750 2,948 3,350 3,685 4,180 4,750 5,092 5,225 5,500 6,365 6,700 7,370 8,375 9,500 10,450 12,730 14,003 14,740 16,750 18,425 20,900 25,460 26,125 28,006 31,825 33,500 36,850 52,250 56,012 63,650 70,015 73,700 92,125 104,500 127,300 140,030 159,125 184,250 280,060 318,250 350,075 368,500 636,500 700,150 1,400,300 1,750,375 3,500,750 and 7,001,500, with no remainder.
Since 7,001,500 cannot be divided by just 1 and 7,001,500, it is not a prime number.