Compare 281 vs 449
| Property | 281 | 449 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2811 | 4491 |
| Prime factorization | 281 | 449 |
| Divisors count | 2 | 2 |
| Divisors | 1, 281 | 1, 449 |
| Number of properties | 10 | 9 |
| Additive primes | 34th | 50th |
| Centered decagonal primes | 7th | |
| Chen primes | 45th | 61st |
| Cousin primes (2nd member) | 17th | |
| Harmonic primes | 23rd | 33rd |
| Isolated primes | 42nd | |
| Primes | 60th | 87th |
| Prime triplets (2nd member) | 17th | |
| Proth primes | 12th | |
| Pythagorean primes | 28th | 42nd |
| Sexy primes (2nd member) | 44th | |
| Solinas primes | 35th | |
| Sophie germain primes | 19th | |
| Twin primes (1st member) | 19th | |
| Roman numberals | CCLXXXI | CDXLIX |
| Base 2 | 1000110012 | 1110000012 |
| Base 3 | 1011023 | 1211223 |
| Base 4 | 101214 | 130014 |
| Base 5 | 21115 | 32445 |
| Base 6 | 11456 | 20256 |
| Base 7 | 5517 | 12117 |
| Base 8 | 4318 | 7018 |
| Base 9 | 3429 | 5489 |
| Base 10 | 28110 | 44910 |
| Base 11 | 23611 | 37911 |
| Base 12 | 1b512 | 31512 |
| Base 13 | 18813 | 28713 |
| Base 14 | 16114 | 24114 |
| Base 15 | 13b15 | 1ee15 |
| Base 16 | 11916 | 1c116 |