Compare 8221 vs 9181
| Property | 8221 | 9181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 82211 | 91811 |
| Prime factorization | 8221 | 9181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 8221 | 1, 9181 |
| Number of properties | 7 | 7 |
| Additive primes | 505th | 550th |
| Chen primes | 554th | 594th |
| Isolated primes | 755th | |
| Lucky primes | 187th | 197th |
| Primes | 1031st | 1138th |
| Pythagorean primes | 511th | 566th |
| Sexy primes (1st member) | 383rd | |
| Super primes | 173rd | |
| Twin primes (2nd member) | 178th | |
| Roman numberals | ||
| Base 2 | 100000000111012 | 100011110111012 |
| Base 3 | 1020211113 | 1101210013 |
| Base 4 | 20001314 | 20331314 |
| Base 5 | 2303415 | 2432115 |
| Base 6 | 1020216 | 1103016 |
| Base 7 | 326537 | 355247 |
| Base 8 | 200358 | 217358 |
| Base 9 | 122449 | 135319 |
| Base 10 | 822110 | 918110 |
| Base 11 | 61a411 | 699711 |
| Base 12 | 491112 | 539112 |
| Base 13 | 398513 | 424313 |
| Base 14 | 2dd314 | 34bb14 |
| Base 15 | 268115 | 2ac115 |
| Base 16 | 201d16 | 23dd16 |