Compare 20921 vs 21179
| Property | 20921 | 21179 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209211 | 211791 |
| Prime factorization | 20921 | 21179 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20921 | 1, 21179 |
| Number of properties | 5 | 7 |
| Chen primes | 1170th | |
| Harmonic primes | 864th | |
| Isolated primes | 1642nd | 1662nd |
| Long primes | 905th | |
| Primes | 2353rd | 2381st |
| Pythagorean primes | 1170th | |
| Safe primes | 199th | |
| Sophie germain primes | 339th | 345th |
| Super primes | 353rd | |
| Roman numberals | ||
| Base 2 | 1010001101110012 | 1010010101110112 |
| Base 3 | 10012002123 | 10020011023 |
| Base 4 | 110123214 | 110223234 |
| Base 5 | 11321415 | 11342045 |
| Base 6 | 2405056 | 2420156 |
| Base 7 | 1146657 | 1155147 |
| Base 8 | 506718 | 512738 |
| Base 9 | 316259 | 320429 |
| Base 10 | 2092110 | 2117910 |
| Base 11 | 1479a11 | 14a0411 |
| Base 12 | 1013512 | 1030b12 |
| Base 13 | 96a413 | 984213 |
| Base 14 | 78a514 | 7a0b14 |
| Base 15 | 62eb15 | 641e15 |
| Base 16 | 51b916 | 52bb16 |