Compare 12821 vs 16561
| Property | 12821 | 16561 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 128211 | 165611 |
| Prime factorization | 12821 | 16561 |
| Divisors count | 2 | 2 |
| Divisors | 1, 12821 | 1, 16561 |
| Number of properties | 8 | 9 |
| Additive primes | 913th | |
| Chen primes | 776th | 966th |
| Harmonic primes | 547th | |
| Isolated primes | 1336th | |
| Long primes | 594th | |
| Palindromic primes | 28th | 38th |
| Primes | 1528th | 1917th |
| Pythagorean primes | 757th | 951st |
| Quartan primes | 20th | |
| Sexy primes (1st member) | 600th | |
| Sexy prime triplets (1st member) | 169th | |
| Sophie germain primes | 232nd | |
| Twin primes (1st member) | 245th | |
| Roman numberals | ||
| Base 2 | 110010000101012 | 1000000101100012 |
| Base 3 | 1221202123 | 2112011013 |
| Base 4 | 30201114 | 100023014 |
| Base 5 | 4022415 | 10122215 |
| Base 6 | 1352056 | 2044016 |
| Base 7 | 522447 | 661667 |
| Base 8 | 310258 | 402618 |
| Base 9 | 185259 | 246419 |
| Base 10 | 1282110 | 1656110 |
| Base 11 | 96a611 | 1149611 |
| Base 12 | 750512 | 970112 |
| Base 13 | 5ab313 | 76cc13 |
| Base 14 | 495b14 | 606d14 |
| Base 15 | 3beb15 | 4d9115 |
| Base 16 | 321516 | 40b116 |