Q: Is 1,999,998 a Prime Number?
A: No, 1,999,998 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1999998 can be evenly divided by 1 2 3 6 7 9 11 13 14 18 21 22 26 27 33 37 39 42 54 63 66 74 77 78 91 99 111 117 126 143 154 182 189 198 222 231 234 259 273 286 297 333 351 378 407 429 462 481 518 546 594 666 693 702 777 814 819 858 962 999 1,001 1,221 1,287 1,386 1,443 1,554 1,638 1,998 2,002 2,079 2,331 2,442 2,457 2,574 2,849 2,886 3,003 3,367 3,663 3,861 4,158 4,329 4,662 4,914 5,291 5,698 6,006 6,734 6,993 7,326 7,722 8,547 8,658 9,009 10,101 10,582 10,989 12,987 13,986 15,873 17,094 18,018 20,202 21,978 25,641 25,974 27,027 30,303 31,746 37,037 47,619 51,282 54,054 60,606 74,074 76,923 90,909 95,238 111,111 142,857 153,846 181,818 222,222 285,714 333,333 666,666 999,999 and 1,999,998, with no remainder.
Since 1,999,998 cannot be divided by just 1 and 1,999,998, it is not a prime number.