Compare 251 vs 253
Property | 251 | 253 |
---|---|---|
Type | prime | semiprime |
Unique factors | 1 | 2 |
Total factors | 1 | 2 |
Prime factorization | 2511 | 111 × 231 |
Prime factorization | 251 | 11 × 23 |
Divisors count | 2 | 4 |
Divisors | 1, 251 | 1, 11, 23, 253 |
Number of properties | 10 | 1 |
Chen primes | 41st | |
Good primes | 19th | |
Harmonic primes | 20th | |
Isolated primes | 21st | |
Primes | 54th | |
Semiprimes | 81st | |
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 | CCLIII |
Base 2 | 111110112 | 111111012 |
Base 3 | 1000223 | 1001013 |
Base 4 | 33234 | 33314 |
Base 5 | 20015 | 20035 |
Base 6 | 10556 | 11016 |
Base 7 | 5067 | 5117 |
Base 8 | 3738 | 3758 |
Base 9 | 3089 | 3119 |
Base 10 | 25110 | 25310 |
Base 11 | 20911 | 21011 |
Base 12 | 18b12 | 19112 |
Base 13 | 16413 | 16613 |
Base 14 | 13d14 | 14114 |
Base 15 | 11b15 | 11d15 |
Base 16 | fb16 | fd16 |