Compare 21139 vs 21757
| Property | 21139 | 21757 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211391 | 217571 |
| Prime factorization | 21139 | 21757 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21139 | 1, 21757 |
| Number of properties | 5 | 8 |
| Chen primes | 1199th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Harmonic primes | 899th | |
| Isolated primes | 1656th | 1700th |
| Lucky primes | 385th | 395th |
| Primes | 2375th | 2441st |
| Pythagorean primes | 1212th | |
| Sexy primes (2nd member) | 739th | |
| Super primes | 362nd | |
| Roman numberals | ||
| Base 2 | 1010010100100112 | 1010100111111012 |
| Base 3 | 10012222213 | 10022112113 |
| Base 4 | 110221034 | 111033314 |
| Base 5 | 11340245 | 11440125 |
| Base 6 | 2415116 | 2444216 |
| Base 7 | 1154267 | 1203017 |
| Base 8 | 512238 | 523758 |
| Base 9 | 318879 | 327549 |
| Base 10 | 2113910 | 2175710 |
| Base 11 | 1497811 | 1538a11 |
| Base 12 | 1029712 | 1071112 |
| Base 13 | 981113 | 9b9813 |
| Base 14 | 79bd14 | 7d0114 |
| Base 15 | 63e415 | 66a715 |
| Base 16 | 529316 | 54fd16 |