Compare 3947 vs 3989
| Property | 3947 | 3989 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 39471 | 39891 |
| Prime factorization | 3947 | 3989 |
| Divisors count | 2 | 2 |
| Divisors | 1, 3947 | 1, 3989 |
| Number of properties | 8 | 8 |
| Additive primes | 280th | 281st |
| Chen primes | 319th | 320th |
| Cousin primes (2nd member) | 108th | |
| Good primes | 94th | |
| Harmonic primes | 198th | |
| Isolated primes | 343rd | 345th |
| Left-truncatable primes | 87th | |
| Long primes | 218th | |
| Primes | 548th | 550th |
| Pythagorean primes | 269th | |
| Restricted left-truncatable primes | 5th | |
| Safe primes | 60th | |
| Roman numberals | MMMCMXLVII | MMMCMLXXXIX |
| Base 2 | 1111011010112 | 1111100101012 |
| Base 3 | 121020123 | 121102023 |
| Base 4 | 3312234 | 3321114 |
| Base 5 | 1112425 | 1114245 |
| Base 6 | 301356 | 302456 |
| Base 7 | 143367 | 144267 |
| Base 8 | 75538 | 76258 |
| Base 9 | 53659 | 54229 |
| Base 10 | 394710 | 398910 |
| Base 11 | 2a6911 | 2aa711 |
| Base 12 | 234b12 | 238512 |
| Base 13 | 1a4813 | 1a7b13 |
| Base 14 | 161d14 | 164d14 |
| Base 15 | 128215 | 12ae15 |
| Base 16 | f6b16 | f9516 |