Compare 12815 vs 12821
| Property | 12815 | 12821 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 111 × 2331 | 128211 |
| Prime factorization | 5 × 11 × 233 | 12821 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 11, 55, 233, 1165, 2563, 12815 | 1, 12821 |
| Number of properties | 0 | 8 |
| Chen primes | 776th | |
| Harmonic primes | 547th | |
| Long primes | 594th | |
| Palindromic primes | 28th | |
| Primes | 1528th | |
| Pythagorean primes | 757th | |
| Sophie germain primes | 232nd | |
| Twin primes (1st member) | 245th | |
| Roman numberals | ||
| Base 2 | 110010000011112 | 110010000101012 |
| Base 3 | 1221201223 | 1221202123 |
| Base 4 | 30200334 | 30201114 |
| Base 5 | 4022305 | 4022415 |
| Base 6 | 1351556 | 1352056 |
| Base 7 | 522357 | 522447 |
| Base 8 | 310178 | 310258 |
| Base 9 | 185189 | 185259 |
| Base 10 | 1281510 | 1282110 |
| Base 11 | 96a011 | 96a611 |
| Base 12 | 74bb12 | 750512 |
| Base 13 | 5aaa13 | 5ab313 |
| Base 14 | 495514 | 495b14 |
| Base 15 | 3be515 | 3beb15 |
| Base 16 | 320f16 | 321516 |