A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7297710 can be evenly divided by 1 2 3 5 6 7 10 14 15 19 21 30 31 35 38 42 57 59 62 70 93 95 105 114 118 133 155 177 186 190 210 217 266 285 295 310 354 399 413 434 465 570 589 590 651 665 798 826 885 930 1,085 1,121 1,178 1,239 1,302 1,330 1,767 1,770 1,829 1,995 2,065 2,170 2,242 2,478 2,945 3,255 3,363 3,534 3,658 3,990 4,123 4,130 5,487 5,605 5,890 6,195 6,510 6,726 7,847 8,246 8,835 9,145 10,974 11,210 12,369 12,390 12,803 15,694 16,815 17,670 18,290 20,615 23,541 24,738 25,606 27,435 33,630 34,751 38,409 39,235 41,230 47,082 54,870 61,845 64,015 69,502 76,818 78,470 104,253 117,705 123,690 128,030 173,755 192,045 208,506 235,410 243,257 347,510 384,090 486,514 521,265 729,771 1,042,530 1,216,285 1,459,542 2,432,570 3,648,855 and 7,297,710, with no remainder.
Since 7,297,710 cannot be divided by just 1 and 7,297,710, it is not a prime number.