A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7410000 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 16 19 20 24 25 26 30 38 39 40 48 50 52 57 60 65 75 76 78 80 95 100 104 114 120 125 130 150 152 156 190 195 200 208 228 240 247 250 260 285 300 304 312 325 375 380 390 400 456 475 494 500 520 570 600 624 625 650 741 750 760 780 912 950 975 988 1,000 1,040 1,140 1,200 1,235 1,250 1,300 1,425 1,482 1,500 1,520 1,560 1,625 1,875 1,900 1,950 1,976 2,000 2,280 2,375 2,470 2,500 2,600 2,850 2,964 3,000 3,120 3,250 3,705 3,750 3,800 3,900 3,952 4,560 4,750 4,875 4,940 5,000 5,200 5,700 5,928 6,000 6,175 6,500 7,125 7,410 7,500 7,600 7,800 8,125 9,500 9,750 9,880 10,000 11,400 11,856 11,875 12,350 13,000 14,250 14,820 15,000 15,600 16,250 18,525 19,000 19,500 19,760 22,800 23,750 24,375 24,700 26,000 28,500 29,640 30,000 30,875 32,500 35,625 37,050 38,000 39,000 47,500 48,750 49,400 57,000 59,280 61,750 65,000 71,250 74,100 78,000 92,625 95,000 97,500 98,800 114,000 123,500 130,000 142,500 148,200 154,375 185,250 190,000 195,000 247,000 285,000 296,400 308,750 370,500 390,000 463,125 494,000 570,000 617,500 741,000 926,250 1,235,000 1,482,000 1,852,500 2,470,000 3,705,000 and 7,410,000, with no remainder.
Since 7,410,000 cannot be divided by just 1 and 7,410,000, it is not a prime number.