Compare 3947 vs 4157
| Property | 3947 | 4157 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 39471 | 41571 |
| Prime factorization | 3947 | 4157 |
| Divisors count | 2 | 2 |
| Divisors | 1, 3947 | 1, 4157 |
| Number of properties | 8 | 8 |
| Additive primes | 280th | 292nd |
| Chen primes | 319th | 330th |
| Cousin primes (2nd member) | 108th | 111th |
| Happy primes | 105th | |
| Isolated primes | 343rd | |
| Left-truncatable primes | 87th | |
| Primes | 548th | 572nd |
| Prime triplets (2nd member) | 74th | |
| Pythagorean primes | 280th | |
| Restricted left-truncatable primes | 5th | |
| Safe primes | 60th | |
| Twin primes (1st member) | 109th | |
| Roman numberals | MMMCMXLVII | MMMMCLVII |
| Base 2 | 1111011010112 | 10000001111012 |
| Base 3 | 121020123 | 122002223 |
| Base 4 | 3312234 | 10003314 |
| Base 5 | 1112425 | 1131125 |
| Base 6 | 301356 | 311256 |
| Base 7 | 143367 | 150567 |
| Base 8 | 75538 | 100758 |
| Base 9 | 53659 | 56289 |
| Base 10 | 394710 | 415710 |
| Base 11 | 2a6911 | 313a11 |
| Base 12 | 234b12 | 24a512 |
| Base 13 | 1a4813 | 1b7a13 |
| Base 14 | 161d14 | 172d14 |
| Base 15 | 128215 | 137215 |
| Base 16 | f6b16 | 103d16 |