Compare 206639 vs 206909
| Property | 206639 | 206909 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2066391 | 2069091 |
| Prime factorization | 206639 | 206909 |
| Divisors count | 2 | 2 |
| Divisors | 1, 206639 | 1, 206909 |
| Number of properties | 5 | 6 |
| Chen primes | 7741st | 7751st |
| Good primes | 1045th | |
| Primes | 18523rd | 18539th |
| Pythagorean primes | 9250th | |
| Safe primes | 1207th | |
| Super primes | 2122nd | 2123rd |
| Twin primes (1st member) | 2217th | 2219th |
| Roman numberals | ||
| Base 2 | 1100100111001011112 | 1100101000001111012 |
| Base 3 | 1011111100223 | 1011112110223 |
| Base 4 | 3021302334 | 3022003314 |
| Base 5 | 231030245 | 231101145 |
| Base 6 | 42323556 | 42335256 |
| Base 7 | 15203067 | 15211437 |
| Base 8 | 6234578 | 6240758 |
| Base 9 | 3444089 | 3447389 |
| Base 10 | 20663910 | 20690910 |
| Base 11 | 13128411 | 1314aa11 |
| Base 12 | 9b6bb12 | 9b8a512 |
| Base 13 | 7309413 | 7324113 |
| Base 14 | 5543d14 | 5559314 |
| Base 15 | 4135e15 | 4148e15 |
| Base 16 | 3272f16 | 3283d16 |