Compare 2181 vs 2209
| Property | 2181 | 2209 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 7271 | 472 |
| Prime factorization | 3 × 727 | 47 × 47 |
| Divisors count | 4 | 3 |
| Divisors | 1, 3, 727, 2181 | 1, 47, 2209 |
| Number of properties | 1 | 1 |
| Semiprimes | 623rd | 634th |
| Roman numberals | MMCLXXXI | MMCCIX |
| Base 2 | 1000100001012 | 1000101000012 |
| Base 3 | 22222103 | 100002113 |
| Base 4 | 2020114 | 2022014 |
| Base 5 | 322115 | 323145 |
| Base 6 | 140336 | 141216 |
| Base 7 | 62347 | 63047 |
| Base 8 | 42058 | 42418 |
| Base 9 | 28839 | 30249 |
| Base 10 | 218110 | 220910 |
| Base 11 | 170311 | 172911 |
| Base 12 | 131912 | 134112 |
| Base 13 | cba13 | 100c13 |
| Base 14 | b1b14 | b3b14 |
| Base 15 | 9a615 | 9c415 |
| Base 16 | 88516 | 8a116 |