Compare 1906 vs 1907
| Property | 1906 | 1907 | 
|---|---|---|
| Type | semiprime | prime | 
| Unique factors | 2 | 1 | 
| Total factors | 2 | 1 | 
| Prime factorization | 21 × 9531 | 19071 | 
| Prime factorization | 2 × 953 | 1907 | 
| Divisors count | 4 | 2 | 
| Divisors | 1, 2, 953, 1906 | 1, 1907 | 
| Number of properties | 1 | 9 | 
| Additive primes | 155th | |
| Chen primes | 180th | |
| Harmonic primes | 107th | |
| Isolated primes | 177th | |
| Primes | 292nd | |
| Safe primes | 37th | |
| Semiprimes | 548th | |
| Sexy primes (1st member) | 125th | |
| Sexy primes (2nd member) | 124th | |
| Sexy prime triplets (2nd member) | 49th | |
| Roman numberals | MCMVI | MCMVII | 
| Base 2 | 111011100102 | 111011100112 | 
| Base 3 | 21211213 | 21211223 | 
| Base 4 | 1313024 | 1313034 | 
| Base 5 | 301115 | 301125 | 
| Base 6 | 124546 | 124556 | 
| Base 7 | 53627 | 53637 | 
| Base 8 | 35628 | 35638 | 
| Base 9 | 25479 | 25489 | 
| Base 10 | 190610 | 190710 | 
| Base 11 | 148311 | 148411 | 
| Base 12 | 112a12 | 112b12 | 
| Base 13 | b3813 | b3913 | 
| Base 14 | 9a214 | 9a314 | 
| Base 15 | 87115 | 87215 | 
| Base 16 | 77216 | 77316 |