Compare 811 vs 819
| Property | 811 | 819 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 8111 | 32 × 71 × 131 |
| Prime factorization | 811 | 3 × 3 × 7 × 13 |
| Divisors count | 2 | 12 |
| Divisors | 1, 811 | 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819 |
| Number of properties | 4 | 0 |
| Chen primes | 96th | |
| Long primes | 49th | |
| Primes | 141st | |
| Twin primes (2nd member) | 31st | |
| Roman numberals | DCCCXI | DCCCXIX |
| Base 2 | 11001010112 | 11001100112 |
| Base 3 | 10100013 | 10101003 |
| Base 4 | 302234 | 303034 |
| Base 5 | 112215 | 112345 |
| Base 6 | 34316 | 34436 |
| Base 7 | 22367 | 22507 |
| Base 8 | 14538 | 14638 |
| Base 9 | 11019 | 11109 |
| Base 10 | 81110 | 81910 |
| Base 11 | 67811 | 68511 |
| Base 12 | 57712 | 58312 |
| Base 13 | 4a513 | 4b013 |
| Base 14 | 41d14 | 42714 |
| Base 15 | 39115 | 39915 |
| Base 16 | 32b16 | 33316 |