Compare 241 vs 251
| Property | 241 | 251 | 
|---|---|---|
| Type | prime | prime | 
| Unique factors | 1 | 1 | 
| Total factors | 1 | 1 | 
| Prime factorization | 2411 | 2511 | 
| Prime factorization | 241 | 251 | 
| Divisors count | 2 | 2 | 
| Divisors | 1, 241 | 1, 251 | 
| Number of properties | 10 | 10 | 
| Additive primes | 31st | |
| Chen primes | 41st | |
| Good primes | 19th | |
| Harmonic primes | 19th | 20th | 
| Isolated primes | 21st | |
| Lucky primes | 16th | |
| Primes | 53rd | 54th | 
| Proth primes | 9th | |
| Pythagorean primes | 24th | |
| Sexy primes (1st member) | 30th | |
| Sexy prime quadrupletss (1st member) | 5th | |
| Sexy prime triplets (1st member) | 15th | |
| Solinas primes | 29th | 30th | 
| Sophie germain primes | 18th | |
| Super primes | 16th | |
| Twin primes (2nd member) | 17th | |
| Ulam primes | 10th | |
| Roman numberals | CCXLI | CCLI | 
| Base 2 | 111100012 | 111110112 | 
| Base 3 | 222213 | 1000223 | 
| Base 4 | 33014 | 33234 | 
| Base 5 | 14315 | 20015 | 
| Base 6 | 10416 | 10556 | 
| Base 7 | 4637 | 5067 | 
| Base 8 | 3618 | 3738 | 
| Base 9 | 2879 | 3089 | 
| Base 10 | 24110 | 25110 | 
| Base 11 | 1aa11 | 20911 | 
| Base 12 | 18112 | 18b12 | 
| Base 13 | 15713 | 16413 | 
| Base 14 | 13314 | 13d14 | 
| Base 15 | 11115 | 11b15 | 
| Base 16 | f116 | fb16 |