Compare 199 vs 206
| Property | 199 | 206 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 1991 | 21 × 1031 |
| Prime factorization | 199 | 2 × 103 |
| Divisors count | 2 | 4 |
| Divisors | 1, 199 | 1, 2, 103, 206 |
| Number of properties | 10 | 1 |
| Additive primes | 27th | |
| Centered triangular primes | 4th | |
| Chen primes | 36th | |
| Emirps | 15th | |
| Lucas primes | 7th | |
| Primes | 46th | |
| Prime quadruplets (4th member) | 4th | |
| Prime triplets (3rd member) | 14th | |
| Semiprimes | 67th | |
| Sexy primes (2nd member) | 26th | |
| Twin primes (2nd member) | 15th | |
| Roman numberals | CXCIX | CCVI |
| Base 2 | 110001112 | 110011102 |
| Base 3 | 211013 | 211223 |
| Base 4 | 30134 | 30324 |
| Base 5 | 12445 | 13115 |
| Base 6 | 5316 | 5426 |
| Base 7 | 4037 | 4137 |
| Base 8 | 3078 | 3168 |
| Base 9 | 2419 | 2489 |
| Base 10 | 19910 | 20610 |
| Base 11 | 17111 | 17811 |
| Base 12 | 14712 | 15212 |
| Base 13 | 12413 | 12b13 |
| Base 14 | 10314 | 10a14 |
| Base 15 | d415 | db15 |
| Base 16 | c716 | ce16 |