Compare 840 vs 849
| Property | 840 | 849 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 4 | 2 |
| Total factors | 6 | 2 |
| Prime factorization | 23 × 31 × 51 × 71 | 31 × 2831 |
| Prime factorization | 2 × 2 × 2 × 3 × 5 × 7 | 3 × 283 |
| Divisors count | 32 | 4 |
| Divisors | 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840 | 1, 3, 283, 849 |
| Number of properties | 0 | 1 |
| Semiprimes | 256th | |
| Roman numberals | DCCCXL | DCCCXLIX |
| Base 2 | 11010010002 | 11010100012 |
| Base 3 | 10110103 | 10111103 |
| Base 4 | 310204 | 311014 |
| Base 5 | 113305 | 113445 |
| Base 6 | 35206 | 35336 |
| Base 7 | 23107 | 23227 |
| Base 8 | 15108 | 15218 |
| Base 9 | 11339 | 11439 |
| Base 10 | 84010 | 84910 |
| Base 11 | 6a411 | 70211 |
| Base 12 | 5a012 | 5a912 |
| Base 13 | 4c813 | 50413 |
| Base 14 | 44014 | 44914 |
| Base 15 | 3b015 | 3b915 |
| Base 16 | 34816 | 35116 |