Compare 8191 vs 16381
| Property | 8191 | 16381 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 81911 | 163811 |
| Prime factorization | 8191 | 16381 |
| Divisors count | 2 | 2 |
| Divisors | 1, 8191 | 1, 16381 |
| Number of properties | 10 | 8 |
| Additive primes | 503rd | 904th |
| Centered square primes | 33rd | |
| Centered triangular primes | 25th | |
| Chen primes | 552nd | |
| Class 1+ primes | 25th | |
| Harmonic primes | 377th | |
| Isolated primes | 675th | 1321st |
| Lucky primes | 186th | 312th |
| Mersenne primes | 5th | |
| Pierpont primes of the 2nd kind | 25th | |
| Primes | 1028th | 1900th |
| Pythagorean primes | 941st | |
| Solinas primes | 76th | 85th |
| Roman numberals | ||
| Base 2 | 11111111111112 | 111111111111012 |
| Base 3 | 1020201013 | 2111102013 |
| Base 4 | 13333334 | 33333314 |
| Base 5 | 2302315 | 10110115 |
| Base 6 | 1015316 | 2035016 |
| Base 7 | 326117 | 655217 |
| Base 8 | 177778 | 377758 |
| Base 9 | 122119 | 244219 |
| Base 10 | 819110 | 1638110 |
| Base 11 | 617711 | 1134211 |
| Base 12 | 48a712 | 959112 |
| Base 13 | 396113 | 75c113 |
| Base 14 | 2db114 | 5d8114 |
| Base 15 | 266115 | 4cc115 |
| Base 16 | 1fff16 | 3ffd16 |