A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5045260 can be evenly divided by 1 2 4 5 10 11 17 19 20 22 34 38 44 55 68 71 76 85 95 110 142 170 187 190 209 220 284 323 340 355 374 380 418 646 710 748 781 836 935 1,045 1,207 1,292 1,349 1,420 1,562 1,615 1,870 2,090 2,414 2,698 3,124 3,230 3,553 3,740 3,905 4,180 4,828 5,396 6,035 6,460 6,745 7,106 7,810 12,070 13,277 13,490 14,212 14,839 15,620 17,765 22,933 24,140 26,554 26,980 29,678 35,530 45,866 53,108 59,356 66,385 71,060 74,195 91,732 114,665 132,770 148,390 229,330 252,263 265,540 296,780 458,660 504,526 1,009,052 1,261,315 2,522,630 and 5,045,260, with no remainder.
Since 5,045,260 cannot be divided by just 1 and 5,045,260, it is not a prime number.