Compare 257 vs 281
Property | 257 | 281 |
---|---|---|
Type | prime | prime |
Unique factors | 1 | 1 |
Total factors | 1 | 1 |
Prime factorization | 2571 | 2811 |
Prime factorization | 257 | 281 |
Divisors count | 2 | 2 |
Divisors | 1, 257 | 1, 281 |
Number of properties | 16 | 10 |
Additive primes | 34th | |
Centered decagonal primes | 7th | |
Chen primes | 42nd | 45th |
Cousin primes (2nd member) | 17th | |
Fermat primes | 4th | |
Good primes | 20th | |
Harmonic primes | 23rd | |
Isolated primes | 22nd | |
Long primes | 21st | |
Pierpont primes | 14th | |
Primes | 55th | 60th |
Prime triplets (2nd member) | 17th | |
Proth primes | 10th | |
Pythagorean primes | 25th | 28th |
Quartan primes | 4th | |
Sexy primes (1st member) | 31st | |
Sexy primes (2nd member) | 30th | |
Sexy prime quadrupletss (2nd member) | 5th | |
Sexy prime triplets (1st member) | 16th | |
Sexy prime triplets (2nd member) | 15th | |
Solinas primes | 31st | |
Sophie germain primes | 19th | |
Twin primes (1st member) | 19th | |
Roman numberals | CCLVII | CCLXXXI |
Base 2 | 1000000012 | 1000110012 |
Base 3 | 1001123 | 1011023 |
Base 4 | 100014 | 101214 |
Base 5 | 20125 | 21115 |
Base 6 | 11056 | 11456 |
Base 7 | 5157 | 5517 |
Base 8 | 4018 | 4318 |
Base 9 | 3159 | 3429 |
Base 10 | 25710 | 28110 |
Base 11 | 21411 | 23611 |
Base 12 | 19512 | 1b512 |
Base 13 | 16a13 | 18813 |
Base 14 | 14514 | 16114 |
Base 15 | 12215 | 13b15 |
Base 16 | 10116 | 11916 |