Compare 205981 vs 205991
| Property | 205981 | 205991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2059811 | 2059911 |
| Prime factorization | 205981 | 205991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 205981 | 1, 205991 |
| Number of properties | 3 | 5 |
| Chen primes | 7717th | |
| Happy primes | 2810th | |
| Isolated primes | 14043rd | |
| Primes | 18462nd | 18463rd |
| Pythagorean primes | 9218th | |
| Twin primes (1st member) | 2211th | |
| Ulam primes | 1331st | |
| Roman numberals | ||
| Base 2 | 1100100100100111012 | 1100100100101001112 |
| Base 3 | 1011101122213 | 1011101200223 |
| Base 4 | 3021021314 | 3021022134 |
| Base 5 | 230424115 | 230424315 |
| Base 6 | 42253416 | 42253556 |
| Base 7 | 15153467 | 15153627 |
| Base 8 | 6222358 | 6222478 |
| Base 9 | 3434879 | 3435089 |
| Base 10 | 20598110 | 20599110 |
| Base 11 | 13083611 | 13084511 |
| Base 12 | 9b25112 | 9b25b12 |
| Base 13 | 729a913 | 729b613 |
| Base 14 | 550cd14 | 550d914 |
| Base 15 | 4107115 | 4107b15 |
| Base 16 | 3249d16 | 324a716 |