Compare 205991 vs 206909
| Property | 205991 | 206909 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2059911 | 2069091 |
| Prime factorization | 205991 | 206909 |
| Divisors count | 2 | 2 |
| Divisors | 1, 205991 | 1, 206909 |
| Number of properties | 5 | 6 |
| Chen primes | 7717th | 7751st |
| Good primes | 1045th | |
| Happy primes | 2810th | |
| Primes | 18463rd | 18539th |
| Pythagorean primes | 9250th | |
| Super primes | 2123rd | |
| Twin primes (1st member) | 2211th | 2219th |
| Ulam primes | 1331st | |
| Roman numberals | ||
| Base 2 | 1100100100101001112 | 1100101000001111012 |
| Base 3 | 1011101200223 | 1011112110223 |
| Base 4 | 3021022134 | 3022003314 |
| Base 5 | 230424315 | 231101145 |
| Base 6 | 42253556 | 42335256 |
| Base 7 | 15153627 | 15211437 |
| Base 8 | 6222478 | 6240758 |
| Base 9 | 3435089 | 3447389 |
| Base 10 | 20599110 | 20690910 |
| Base 11 | 13084511 | 1314aa11 |
| Base 12 | 9b25b12 | 9b8a512 |
| Base 13 | 729b613 | 7324113 |
| Base 14 | 550d914 | 5559314 |
| Base 15 | 4107b15 | 4148e15 |
| Base 16 | 324a716 | 3283d16 |