Compare 19919 vs 19991
| Property | 19919 | 19991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 199191 | 199911 |
| Prime factorization | 19919 | 19991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19919 | 1, 19991 |
| Number of properties | 7 | 9 |
| Additive primes | 1046th | 1049th |
| Chen primes | 1107th | 1111th |
| Harmonic primes | 816th | 820th |
| Isolated primes | 1573rd | |
| Palindromic primes | 46th | |
| Primes | 2252nd | 2260th |
| Prime triplets (1st member) | 168th | |
| Sexy primes (1st member) | 693rd | |
| Sexy primes (2nd member) | 691st | |
| Sophie germain primes | 325th | 326th |
| Twin primes (1st member) | 342nd | |
| Roman numberals | ||
| Base 2 | 1001101110011112 | 1001110000101112 |
| Base 3 | 10000222023 | 10001021023 |
| Base 4 | 103130334 | 103201134 |
| Base 5 | 11141345 | 11144315 |
| Base 6 | 2321156 | 2323156 |
| Base 7 | 1120347 | 1121667 |
| Base 8 | 467178 | 470278 |
| Base 9 | 302829 | 303729 |
| Base 10 | 1991910 | 1999110 |
| Base 11 | 13a6911 | 1402411 |
| Base 12 | b63b12 | b69b12 |
| Base 13 | 90b313 | 913a13 |
| Base 14 | 738b14 | 73dd14 |
| Base 15 | 5d7e15 | 5dcb15 |
| Base 16 | 4dcf16 | 4e1716 |