Compare 1999 vs 2971
| Property | 1999 | 2971 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 19991 | 29711 |
| Prime factorization | 1999 | 2971 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1999 | 1, 2971 |
| Number of properties | 8 | 7 |
| Additive primes | 221st | |
| Centered triangular primes | 10th | 12th |
| Chen primes | 256th | |
| Cousin primes (1st member) | 65th | |
| Long primes | 175th | |
| Lucky primes | 90th | |
| Primes | 303rd | 429th |
| Prime triplets (2nd member) | 50th | |
| Prime triplets (3rd member) | 49th | |
| Sexy primes (2nd member) | 128th | |
| Sexy prime triplets (3rd member) | 50th | |
| Twin primes (2nd member) | 61st | 81st |
| Roman numberals | MCMXCIX | MMCMLXXI |
| Base 2 | 111110011112 | 1011100110112 |
| Base 3 | 22020013 | 110020013 |
| Base 4 | 1330334 | 2321234 |
| Base 5 | 304445 | 433415 |
| Base 6 | 131316 | 214316 |
| Base 7 | 55547 | 114437 |
| Base 8 | 37178 | 56338 |
| Base 9 | 26619 | 40619 |
| Base 10 | 199910 | 297110 |
| Base 11 | 155811 | 226111 |
| Base 12 | 11a712 | 187712 |
| Base 13 | baa13 | 147713 |
| Base 14 | a2b14 | 112314 |
| Base 15 | 8d415 | d3115 |
| Base 16 | 7cf16 | b9b16 |