Compare 19961 vs 19991
| Property | 19961 | 19991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 199611 | 199911 |
| Prime factorization | 19961 | 19991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19961 | 1, 19991 |
| Number of properties | 5 | 9 |
| Additive primes | 1049th | |
| Chen primes | 1110th | 1111th |
| Good primes | 257th | |
| Harmonic primes | 820th | |
| Palindromic primes | 46th | |
| Primes | 2256th | 2260th |
| Prime triplets (1st member) | 168th | |
| Pythagorean primes | 1122nd | |
| Sexy primes (1st member) | 693rd | |
| Sophie germain primes | 326th | |
| Twin primes (1st member) | 341st | 342nd |
| Roman numberals | ||
| Base 2 | 1001101111110012 | 1001110000101112 |
| Base 3 | 10001010223 | 10001021023 |
| Base 4 | 103133214 | 103201134 |
| Base 5 | 11143215 | 11144315 |
| Base 6 | 2322256 | 2323156 |
| Base 7 | 1121247 | 1121667 |
| Base 8 | 467718 | 470278 |
| Base 9 | 303389 | 303729 |
| Base 10 | 1996110 | 1999110 |
| Base 11 | 13aa711 | 1402411 |
| Base 12 | b67512 | b69b12 |
| Base 13 | 911613 | 913a13 |
| Base 14 | 73bb14 | 73dd14 |
| Base 15 | 5dab15 | 5dcb15 |
| Base 16 | 4df916 | 4e1716 |