A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5301270 can be evenly divided by 1 2 3 5 6 9 10 13 15 18 23 26 30 39 45 46 65 69 78 90 115 117 130 138 195 197 207 230 234 299 345 390 394 414 585 591 598 690 897 985 1,035 1,170 1,182 1,495 1,773 1,794 1,970 2,070 2,561 2,691 2,955 2,990 3,546 4,485 4,531 5,122 5,382 5,910 7,683 8,865 8,970 9,062 12,805 13,455 13,593 15,366 17,730 22,655 23,049 25,610 26,910 27,186 38,415 40,779 45,310 46,098 58,903 67,965 76,830 81,558 115,245 117,806 135,930 176,709 203,895 230,490 294,515 353,418 407,790 530,127 589,030 883,545 1,060,254 1,767,090 2,650,635 and 5,301,270, with no remainder.
Since 5,301,270 cannot be divided by just 1 and 5,301,270, it is not a prime number.