Q: Is 221,222,001 a Prime Number?
A: No, 221,222,001 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 221222001 can be evenly divided by 1 3 7 11 13 21 33 37 39 77 91 111 121 143 181 231 259 273 363 407 429 481 543 777 847 1,001 1,221 1,267 1,443 1,573 1,991 2,353 2,541 2,849 3,003 3,367 3,801 4,477 4,719 5,291 5,973 6,697 7,059 8,547 10,101 11,011 13,431 13,937 15,873 16,471 20,091 21,901 25,883 31,339 33,033 37,037 41,811 46,879 49,413 58,201 65,703 73,667 77,649 87,061 94,017 111,111 140,637 153,307 174,603 181,181 221,001 261,183 284,713 407,407 459,921 515,669 543,543 609,427 810,337 854,139 957,671 1,222,221 1,547,007 1,828,281 1,992,991 2,431,011 2,873,013 5,672,359 5,978,973 6,703,697 10,534,381 17,017,077 20,111,091 31,603,143 73,740,667 and 221,222,001, with no remainder.
Since 221,222,001 cannot be divided by just 1 and 221,222,001, it is not a prime number.
| Number | 221,221,999 | 221,222,000 | 221,222,002 | 221,222,003 |
| Prime? | no | no | no | no |