A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1014300 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 23 25 28 30 35 36 42 45 46 49 50 60 63 69 70 75 84 90 92 98 100 105 115 126 138 140 147 150 161 175 180 196 207 210 225 230 245 252 276 294 300 315 322 345 350 414 420 441 450 460 483 490 525 575 588 630 644 690 700 735 805 828 882 900 966 980 1,035 1,050 1,127 1,150 1,225 1,260 1,380 1,449 1,470 1,575 1,610 1,725 1,764 1,932 2,070 2,100 2,205 2,254 2,300 2,415 2,450 2,898 2,940 3,150 3,220 3,381 3,450 3,675 4,025 4,140 4,410 4,508 4,830 4,900 5,175 5,635 5,796 6,300 6,762 6,900 7,245 7,350 8,050 8,820 9,660 10,143 10,350 11,025 11,270 12,075 13,524 14,490 14,700 16,100 16,905 20,286 20,700 22,050 22,540 24,150 28,175 28,980 33,810 36,225 40,572 44,100 48,300 50,715 56,350 67,620 72,450 84,525 101,430 112,700 144,900 169,050 202,860 253,575 338,100 507,150 and 1,014,300, with no remainder.
Since 1,014,300 cannot be divided by just 1 and 1,014,300, it is not a prime number.