Compare 19961 vs 21139
| Property | 19961 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 199611 | 211391 |
| Prime factorization | 19961 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19961 | 1, 21139 |
| Number of properties | 5 | 5 |
| Chen primes | 1110th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 257th | 266th |
| Isolated primes | 1656th | |
| Lucky primes | 385th | |
| Primes | 2256th | 2375th |
| Pythagorean primes | 1122nd | |
| Twin primes (1st member) | 341st | |
| Roman numberals | ||
| Base 2 | 1001101111110012 | 1010010100100112 |
| Base 3 | 10001010223 | 10012222213 |
| Base 4 | 103133214 | 110221034 |
| Base 5 | 11143215 | 11340245 |
| Base 6 | 2322256 | 2415116 |
| Base 7 | 1121247 | 1154267 |
| Base 8 | 467718 | 512238 |
| Base 9 | 303389 | 318879 |
| Base 10 | 1996110 | 2113910 |
| Base 11 | 13aa711 | 1497811 |
| Base 12 | b67512 | 1029712 |
| Base 13 | 911613 | 981113 |
| Base 14 | 73bb14 | 79bd14 |
| Base 15 | 5dab15 | 63e415 |
| Base 16 | 4df916 | 529316 |