Compare 12821 vs 15551
| Property | 12821 | 15551 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 128211 | 155511 |
| Prime factorization | 12821 | 15551 |
| Divisors count | 2 | 2 |
| Divisors | 1, 12821 | 1, 15551 |
| Number of properties | 8 | 8 |
| Additive primes | 862nd | |
| Chen primes | 776th | 918th |
| Class 1+ primes | 28th | |
| Harmonic primes | 547th | 657th |
| Isolated primes | 1261st | |
| Long primes | 594th | |
| Palindromic primes | 28th | 35th |
| Pierpont primes of the 2nd kind | 28th | |
| Primes | 1528th | 1814th |
| Pythagorean primes | 757th | |
| Sophie germain primes | 232nd | |
| Twin primes (1st member) | 245th | |
| Roman numberals | ||
| Base 2 | 110010000101012 | 111100101111112 |
| Base 3 | 1221202123 | 2100222223 |
| Base 4 | 30201114 | 33023334 |
| Base 5 | 4022415 | 4442015 |
| Base 6 | 1352056 | 1555556 |
| Base 7 | 522447 | 632247 |
| Base 8 | 310258 | 362778 |
| Base 9 | 185259 | 232889 |
| Base 10 | 1282110 | 1555110 |
| Base 11 | 96a611 | 1075811 |
| Base 12 | 750512 | 8bbb12 |
| Base 13 | 5ab313 | 710313 |
| Base 14 | 495b14 | 594b14 |
| Base 15 | 3beb15 | 491b15 |
| Base 16 | 321516 | 3cbf16 |