Compare 81421 vs 81899
| Property | 81421 | 81899 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 814211 | 818991 |
| Prime factorization | 81421 | 81899 |
| Divisors count | 2 | 2 |
| Divisors | 1, 81421 | 1, 81899 |
| Number of properties | 6 | 6 |
| Chen primes | 3611th | |
| Happy primes | 1236th | 1240th |
| Harmonic primes | 3008th | |
| Isolated primes | 5916th | |
| Long primes | 3038th | |
| Lucky primes | 1073rd | |
| Primes | 7967th | 8007th |
| Pythagorean primes | 3970th | |
| Safe primes | 573rd | |
| Twin primes (1st member) | 1030th | |
| Roman numberals | ||
| Base 2 | 100111110000011012 | 100111111111010112 |
| Base 3 | 110102001213 | 110111000223 |
| Base 4 | 1033200314 | 1033332234 |
| Base 5 | 101011415 | 101100445 |
| Base 6 | 14245416 | 14310556 |
| Base 7 | 4562447 | 4605267 |
| Base 8 | 2370158 | 2377538 |
| Base 9 | 1336179 | 1343089 |
| Base 10 | 8142110 | 8189910 |
| Base 11 | 5619a11 | 5659411 |
| Base 12 | 3b15112 | 3b48b12 |
| Base 13 | 2b0a213 | 2b37c13 |
| Base 14 | 2195b14 | 21bbd14 |
| Base 15 | 191d115 | 193ee15 |
| Base 16 | 13e0d16 | 13feb16 |