A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2353050 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 25 27 30 35 42 45 50 54 63 70 75 81 83 90 105 126 135 150 162 166 175 189 210 225 249 270 315 350 378 405 415 450 498 525 567 581 630 675 747 810 830 945 1,050 1,134 1,162 1,245 1,350 1,494 1,575 1,743 1,890 2,025 2,075 2,241 2,490 2,835 2,905 3,150 3,486 3,735 4,050 4,150 4,482 4,725 5,229 5,670 5,810 6,225 6,723 7,470 8,715 9,450 10,458 11,205 12,450 13,446 14,175 14,525 15,687 17,430 18,675 22,410 26,145 28,350 29,050 31,374 33,615 37,350 43,575 47,061 52,290 56,025 67,230 78,435 87,150 94,122 112,050 130,725 156,870 168,075 235,305 261,450 336,150 392,175 470,610 784,350 1,176,525 and 2,353,050, with no remainder.
Since 2,353,050 cannot be divided by just 1 and 2,353,050, it is not a prime number.