Compare 21009 vs 21018
| Property | 21009 | 21018 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 4 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 471 × 1491 | 21 × 31 × 311 × 1131 |
| Prime factorization | 3 × 47 × 149 | 2 × 3 × 31 × 113 |
| Divisors count | 8 | 16 |
| Divisors | 1, 3, 47, 141, 149, 447, 7003, 21009 | 1, 2, 3, 6, 31, 62, 93, 113, 186, 226, 339, 678, 3503, 7006, 10509, 21018 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1010010000100012 | 1010010000110102 |
| Base 3 | 10012110103 | 10012111103 |
| Base 4 | 110201014 | 110201224 |
| Base 5 | 11330145 | 11330335 |
| Base 6 | 2411336 | 2411506 |
| Base 7 | 1151527 | 1151647 |
| Base 8 | 510218 | 510328 |
| Base 9 | 317339 | 317439 |
| Base 10 | 2100910 | 2101810 |
| Base 11 | 1486a11 | 1487811 |
| Base 12 | 101a912 | 101b612 |
| Base 13 | 974113 | 974a13 |
| Base 14 | 792914 | 793414 |
| Base 15 | 635915 | 636315 |
| Base 16 | 521116 | 521a16 |