Compare 820 vs 823
| Property | 820 | 823 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 51 × 411 | 8231 |
| Prime factorization | 2 × 2 × 5 × 41 | 823 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820 | 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 | DCCCXX | DCCCXXIII |
| Base 2 | 11001101002 | 11001101112 |
| Base 3 | 10101013 | 10101113 |
| Base 4 | 303104 | 303134 |
| Base 5 | 112405 | 112435 |
| Base 6 | 34446 | 34516 |
| Base 7 | 22517 | 22547 |
| Base 8 | 14648 | 14678 |
| Base 9 | 11119 | 11149 |
| Base 10 | 82010 | 82310 |
| Base 11 | 68611 | 68911 |
| Base 12 | 58412 | 58712 |
| Base 13 | 4b113 | 4b413 |
| Base 14 | 42814 | 42b14 |
| Base 15 | 39a15 | 39d15 |
| Base 16 | 33416 | 33716 |