Compare 251 vs 254
Property | 251 | 254 |
---|---|---|
Type | prime | semiprime |
Unique factors | 1 | 2 |
Total factors | 1 | 2 |
Prime factorization | 2511 | 21 × 1271 |
Prime factorization | 251 | 2 × 127 |
Divisors count | 2 | 4 |
Divisors | 1, 251 | 1, 2, 127, 254 |
Number of properties | 10 | 1 |
Chen primes | 41st | |
Good primes | 19th | |
Harmonic primes | 20th | |
Isolated primes | 21st | |
Primes | 54th | |
Semiprimes | 82nd | |
Sexy primes (1st member) | 30th | |
Sexy prime quadrupletss (1st member) | 5th | |
Sexy prime triplets (1st member) | 15th | |
Solinas primes | 30th | |
Sophie germain primes | 18th | |
Roman numberals | CCLI | CCLIV |
Base 2 | 111110112 | 111111102 |
Base 3 | 1000223 | 1001023 |
Base 4 | 33234 | 33324 |
Base 5 | 20015 | 20045 |
Base 6 | 10556 | 11026 |
Base 7 | 5067 | 5127 |
Base 8 | 3738 | 3768 |
Base 9 | 3089 | 3129 |
Base 10 | 25110 | 25410 |
Base 11 | 20911 | 21111 |
Base 12 | 18b12 | 19212 |
Base 13 | 16413 | 16713 |
Base 14 | 13d14 | 14214 |
Base 15 | 11b15 | 11e15 |
Base 16 | fb16 | fe16 |