Compare 251 vs 521
Property | 251 | 521 |
---|---|---|
Type | prime | prime |
Unique factors | 1 | 1 |
Total factors | 1 | 1 |
Prime factorization | 2511 | 5211 |
Prime factorization | 251 | 521 |
Divisors count | 2 | 2 |
Divisors | 1, 251 | 1, 521 |
Number of properties | 10 | 6 |
Chen primes | 41st | 70th |
Good primes | 19th | |
Harmonic primes | 20th | |
Isolated primes | 21st | |
Lucas primes | 8th | |
Primes | 54th | 98th |
Pythagorean primes | 46th | |
Sexy primes (1st member) | 30th | |
Sexy prime quadrupletss (1st member) | 5th | |
Sexy prime triplets (1st member) | 15th | |
Solinas primes | 30th | 39th |
Sophie germain primes | 18th | |
Twin primes (1st member) | 25th | |
Roman numberals | CCLI | DXXI |
Base 2 | 111110112 | 10000010012 |
Base 3 | 1000223 | 2010223 |
Base 4 | 33234 | 200214 |
Base 5 | 20015 | 40415 |
Base 6 | 10556 | 22256 |
Base 7 | 5067 | 13437 |
Base 8 | 3738 | 10118 |
Base 9 | 3089 | 6389 |
Base 10 | 25110 | 52110 |
Base 11 | 20911 | 43411 |
Base 12 | 18b12 | 37512 |
Base 13 | 16413 | 31113 |
Base 14 | 13d14 | 29314 |
Base 15 | 11b15 | 24b15 |
Base 16 | fb16 | 20916 |