A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2416500 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 25 27 30 36 45 50 54 60 75 90 100 108 125 135 150 179 180 225 250 270 300 358 375 450 500 537 540 675 716 750 895 900 1,074 1,125 1,350 1,500 1,611 1,790 2,148 2,250 2,685 2,700 3,222 3,375 3,580 4,475 4,500 4,833 5,370 6,444 6,750 8,055 8,950 9,666 10,740 13,425 13,500 16,110 17,900 19,332 22,375 24,165 26,850 32,220 40,275 44,750 48,330 53,700 67,125 80,550 89,500 96,660 120,825 134,250 161,100 201,375 241,650 268,500 402,750 483,300 604,125 805,500 1,208,250 and 2,416,500, with no remainder.
Since 2,416,500 cannot be divided by just 1 and 2,416,500, it is not a prime number.