Compare 819 vs 823
| Property | 819 | 823 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 32 × 71 × 131 | 8231 |
| Prime factorization | 3 × 3 × 7 × 13 | 823 |
| Divisors count | 12 | 2 |
| Divisors | 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819 | 1, 823 |
| Number of properties | 0 | 11 |
| Additive primes | 76th | |
| Cousin primes (1st member) | 34th | |
| Left-truncatable primes | 46th | |
| Long primes | 51st | |
| Lucky primes | 39th | |
| Primes | 143rd | |
| Prime quadruplets (2nd member) | 5th | |
| Prime triplets (1st member) | 26th | |
| Prime triplets (2nd member) | 25th | |
| Sexy primes (1st member) | 65th | |
| Twin primes (2nd member) | 32nd | |
| Roman numberals | DCCCXIX | DCCCXXIII |
| Base 2 | 11001100112 | 11001101112 |
| Base 3 | 10101003 | 10101113 |
| Base 4 | 303034 | 303134 |
| Base 5 | 112345 | 112435 |
| Base 6 | 34436 | 34516 |
| Base 7 | 22507 | 22547 |
| Base 8 | 14638 | 14678 |
| Base 9 | 11109 | 11149 |
| Base 10 | 81910 | 82310 |
| Base 11 | 68511 | 68911 |
| Base 12 | 58312 | 58712 |
| Base 13 | 4b013 | 4b413 |
| Base 14 | 42714 | 42b14 |
| Base 15 | 39915 | 39d15 |
| Base 16 | 33316 | 33716 |