A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5411808 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 19 23 24 32 36 38 43 46 48 57 69 72 76 86 92 96 114 129 138 144 152 171 172 184 207 228 258 276 288 304 342 344 368 387 414 437 456 516 552 608 684 688 736 774 817 828 874 912 989 1,032 1,104 1,311 1,368 1,376 1,548 1,634 1,656 1,748 1,824 1,978 2,064 2,208 2,451 2,622 2,736 2,967 3,096 3,268 3,312 3,496 3,933 3,956 4,128 4,902 5,244 5,472 5,934 6,192 6,536 6,624 6,992 7,353 7,866 7,912 8,901 9,804 10,488 11,868 12,384 13,072 13,984 14,706 15,732 15,824 17,802 18,791 19,608 20,976 23,736 26,144 29,412 31,464 31,648 35,604 37,582 39,216 41,952 47,472 56,373 58,824 62,928 71,208 75,164 78,432 94,944 112,746 117,648 125,856 142,416 150,328 169,119 225,492 235,296 284,832 300,656 338,238 450,984 601,312 676,476 901,968 1,352,952 1,803,936 2,705,904 and 5,411,808, with no remainder.
Since 5,411,808 cannot be divided by just 1 and 5,411,808, it is not a prime number.