A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6115230 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 22 27 29 30 33 45 54 55 58 66 71 87 90 99 110 135 142 145 165 174 198 213 261 270 290 297 319 330 355 426 435 495 522 594 638 639 710 781 783 870 957 990 1,065 1,278 1,305 1,485 1,562 1,566 1,595 1,914 1,917 2,059 2,130 2,343 2,610 2,871 2,970 3,190 3,195 3,834 3,905 3,915 4,118 4,686 4,785 5,742 6,177 6,390 7,029 7,810 7,830 8,613 9,570 9,585 10,295 11,715 12,354 14,058 14,355 17,226 18,531 19,170 20,590 21,087 22,649 23,430 28,710 30,885 35,145 37,062 42,174 43,065 45,298 55,593 61,770 67,947 70,290 86,130 92,655 105,435 111,186 113,245 135,894 185,310 203,841 210,870 226,490 277,965 339,735 407,682 555,930 611,523 679,470 1,019,205 1,223,046 2,038,410 3,057,615 and 6,115,230, with no remainder.
Since 6,115,230 cannot be divided by just 1 and 6,115,230, it is not a prime number.