Compare 20897 vs 21139
| Property | 20897 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208971 | 211391 |
| Prime factorization | 20897 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20897 | 1, 21139 |
| Number of properties | 9 | 5 |
| Chen primes | 1156th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 264th | 266th |
| Harmonic primes | 861st | |
| Isolated primes | 1656th | |
| Long primes | 893rd | |
| Lucky primes | 385th | |
| Primes | 2350th | 2375th |
| Prime triplets (1st member) | 174th | |
| Pythagorean primes | 1169th | |
| Sexy primes (1st member) | 713th | |
| Twin primes (1st member) | 356th | |
| Roman numberals | ||
| Base 2 | 1010001101000012 | 1010010100100112 |
| Base 3 | 10011222223 | 10012222213 |
| Base 4 | 110122014 | 110221034 |
| Base 5 | 11320425 | 11340245 |
| Base 6 | 2404256 | 2415116 |
| Base 7 | 1146327 | 1154267 |
| Base 8 | 506418 | 512238 |
| Base 9 | 315889 | 318879 |
| Base 10 | 2089710 | 2113910 |
| Base 11 | 1477811 | 1497811 |
| Base 12 | 1011512 | 1029712 |
| Base 13 | 968613 | 981113 |
| Base 14 | 788914 | 79bd14 |
| Base 15 | 62d215 | 63e415 |
| Base 16 | 51a116 | 529316 |