Compare 2181 vs 2190
| Property | 2181 | 2190 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 4 |
| Prime factorization | 31 × 7271 | 21 × 31 × 51 × 731 |
| Prime factorization | 3 × 727 | 2 × 3 × 5 × 73 |
| Divisors count | 4 | 16 |
| Divisors | 1, 3, 727, 2181 | 1, 2, 3, 5, 6, 10, 15, 30, 73, 146, 219, 365, 438, 730, 1095, 2190 |
| Number of properties | 1 | 0 |
| Semiprimes | 623rd | |
| Roman numberals | MMCLXXXI | MMCXC |
| Base 2 | 1000100001012 | 1000100011102 |
| Base 3 | 22222103 | 100000103 |
| Base 4 | 2020114 | 2020324 |
| Base 5 | 322115 | 322305 |
| Base 6 | 140336 | 140506 |
| Base 7 | 62347 | 62467 |
| Base 8 | 42058 | 42168 |
| Base 9 | 28839 | 30039 |
| Base 10 | 218110 | 219010 |
| Base 11 | 170311 | 171111 |
| Base 12 | 131912 | 132612 |
| Base 13 | cba13 | cc613 |
| Base 14 | b1b14 | b2614 |
| Base 15 | 9a615 | 9b015 |
| Base 16 | 88516 | 88e16 |