A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7100460 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 243 270 324 405 486 487 540 729 810 972 974 1,215 1,458 1,461 1,620 1,948 2,430 2,435 2,916 2,922 3,645 4,383 4,860 4,870 5,844 7,290 7,305 8,766 9,740 13,149 14,580 14,610 17,532 21,915 26,298 29,220 39,447 43,830 52,596 65,745 78,894 87,660 118,341 131,490 157,788 197,235 236,682 262,980 355,023 394,470 473,364 591,705 710,046 788,940 1,183,410 1,420,092 1,775,115 2,366,820 3,550,230 and 7,100,460, with no remainder.
Since 7,100,460 cannot be divided by just 1 and 7,100,460, it is not a prime number.