Compare 1409 vs 1481
| Property | 1409 | 1481 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 14091 | 14811 |
| Prime factorization | 1409 | 1481 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1409 | 1, 1481 |
| Number of properties | 8 | 13 |
| Chen primes | 146th | 152nd |
| Emirps | 66th | |
| Happy primes | 46th | |
| Harmonic primes | 80th | |
| Isolated primes | 132nd | |
| Primes | 223rd | 234th |
| Prime quadruplets (1st member) | 6th | |
| Prime quintuplet 2s (1st member) | 4th | |
| Prime triplets (1st member) | 39th | |
| Proth primes | 20th | |
| Pythagorean primes | 110th | 114th |
| Sexy primes (1st member) | 102nd | |
| Sexy prime quadrupletss (1st member) | 9th | |
| Sexy prime triplets (1st member) | 39th | |
| Sophie germain primes | 46th | 49th |
| Super primes | 48th | |
| Twin primes (1st member) | 49th | |
| Roman numberals | MCDIX | MCDLXXXI |
| Base 2 | 101100000012 | 101110010012 |
| Base 3 | 12210123 | 20002123 |
| Base 4 | 1120014 | 1130214 |
| Base 5 | 211145 | 214115 |
| Base 6 | 103056 | 105056 |
| Base 7 | 40527 | 42147 |
| Base 8 | 26018 | 27118 |
| Base 9 | 18359 | 20259 |
| Base 10 | 140910 | 148110 |
| Base 11 | 107111 | 112711 |
| Base 12 | 99512 | a3512 |
| Base 13 | 84513 | 89c13 |
| Base 14 | 72914 | 77b14 |
| Base 15 | 63e15 | 68b15 |
| Base 16 | 58116 | 5c916 |