A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6502104 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 19 21 24 28 36 38 42 49 56 57 63 72 76 84 97 98 114 126 133 147 152 168 171 194 196 228 252 266 291 294 342 388 392 399 441 456 504 532 582 588 679 684 776 798 873 882 931 1,064 1,164 1,176 1,197 1,358 1,368 1,596 1,746 1,764 1,843 1,862 2,037 2,328 2,394 2,716 2,793 3,192 3,492 3,528 3,686 3,724 4,074 4,753 4,788 5,432 5,529 5,586 6,111 6,984 7,372 7,448 8,148 8,379 9,506 9,576 11,058 11,172 12,222 12,901 14,259 14,744 16,296 16,587 16,758 19,012 22,116 22,344 24,444 25,802 28,518 33,174 33,516 38,024 38,703 42,777 44,232 48,888 51,604 57,036 66,348 67,032 77,406 85,554 90,307 103,208 114,072 116,109 132,696 154,812 171,108 180,614 232,218 270,921 309,624 342,216 361,228 464,436 541,842 722,456 812,763 928,872 1,083,684 1,625,526 2,167,368 3,251,052 and 6,502,104, with no remainder.
Since 6,502,104 cannot be divided by just 1 and 6,502,104, it is not a prime number.