A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3041472 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 31 32 42 48 56 62 64 73 84 93 96 112 124 146 168 186 192 217 219 224 248 292 336 372 434 438 448 496 511 584 651 672 744 868 876 992 1,022 1,168 1,302 1,344 1,488 1,533 1,736 1,752 1,984 2,044 2,263 2,336 2,604 2,976 3,066 3,472 3,504 4,088 4,526 4,672 5,208 5,952 6,132 6,789 6,944 7,008 8,176 9,052 10,416 12,264 13,578 13,888 14,016 15,841 16,352 18,104 20,832 24,528 27,156 31,682 32,704 36,208 41,664 47,523 49,056 54,312 63,364 72,416 95,046 98,112 108,624 126,728 144,832 190,092 217,248 253,456 380,184 434,496 506,912 760,368 1,013,824 1,520,736 and 3,041,472, with no remainder.
Since 3,041,472 cannot be divided by just 1 and 3,041,472, it is not a prime number.