Compare 163 vs 251
| Property | 163 | 251 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 1631 | 2511 |
| Prime factorization | 163 | 251 |
| Divisors count | 2 | 2 |
| Divisors | 1, 163 | 1, 251 |
| Number of properties | 7 | 10 |
| Chen primes | 41st | |
| Cousin primes (1st member) | 13th | |
| Good primes | 19th | |
| Harmonic primes | 20th | |
| Isolated primes | 15th | 21st |
| Lucky primes | 12th | |
| Pierpont primes | 12th | |
| Primes | 38th | 54th |
| Sexy primes (1st member) | 30th | |
| Sexy primes (2nd member) | 22nd | |
| Sexy prime quadrupletss (1st member) | 5th | |
| Sexy prime triplets (1st member) | 15th | |
| Sexy prime triplets (3rd member) | 12th | |
| Solinas primes | 30th | |
| Sophie germain primes | 18th | |
| Roman numberals | CLXIII | CCLI |
| Base 2 | 101000112 | 111110112 |
| Base 3 | 200013 | 1000223 |
| Base 4 | 22034 | 33234 |
| Base 5 | 11235 | 20015 |
| Base 6 | 4316 | 10556 |
| Base 7 | 3227 | 5067 |
| Base 8 | 2438 | 3738 |
| Base 9 | 2019 | 3089 |
| Base 10 | 16310 | 25110 |
| Base 11 | 13911 | 20911 |
| Base 12 | 11712 | 18b12 |
| Base 13 | c713 | 16413 |
| Base 14 | b914 | 13d14 |
| Base 15 | ad15 | 11b15 |
| Base 16 | a316 | fb16 |