Compare 19983 vs 19991
| Property | 19983 | 19991 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 66611 | 199911 |
| Prime factorization | 3 × 6661 | 19991 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 6661, 19983 | 1, 19991 |
| Number of properties | 1 | 9 |
| Additive primes | 1049th | |
| Chen primes | 1111th | |
| Harmonic primes | 820th | |
| Palindromic primes | 46th | |
| Primes | 2260th | |
| Prime triplets (1st member) | 168th | |
| Semiprimes | 5080th | |
| Sexy primes (1st member) | 693rd | |
| Sophie germain primes | 326th | |
| Twin primes (1st member) | 342nd | |
| Roman numberals | ||
| Base 2 | 1001110000011112 | 1001110000101112 |
| Base 3 | 10001020103 | 10001021023 |
| Base 4 | 103200334 | 103201134 |
| Base 5 | 11144135 | 11144315 |
| Base 6 | 2323036 | 2323156 |
| Base 7 | 1121557 | 1121667 |
| Base 8 | 470178 | 470278 |
| Base 9 | 303639 | 303729 |
| Base 10 | 1998310 | 1999110 |
| Base 11 | 1401711 | 1402411 |
| Base 12 | b69312 | b69b12 |
| Base 13 | 913213 | 913a13 |
| Base 14 | 73d514 | 73dd14 |
| Base 15 | 5dc315 | 5dcb15 |
| Base 16 | 4e0f16 | 4e1716 |