Compare 20887 vs 21613
| Property | 20887 | 21613 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 208871 | 216131 |
| Prime factorization | 20887 | 21613 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20887 | 1, 21613 |
| Number of properties | 3 | 8 |
| Additive primes | 1126th | |
| Cousin primes (1st member) | 370th | |
| Isolated primes | 1640th | |
| Left-truncatable primes | 172nd | |
| Lucky primes | 381st | 392nd |
| Primes | 2349th | 2428th |
| Prime triplets (2nd member) | 185th | |
| Pythagorean primes | 1204th | |
| Twin primes (2nd member) | 369th | |
| Roman numberals | ||
| Base 2 | 1010001100101112 | 1010100011011012 |
| Base 3 | 10011221213 | 10021221113 |
| Base 4 | 110121134 | 111012314 |
| Base 5 | 11320225 | 11424235 |
| Base 6 | 2404116 | 2440216 |
| Base 7 | 1146167 | 1200047 |
| Base 8 | 506278 | 521558 |
| Base 9 | 315779 | 325749 |
| Base 10 | 2088710 | 2161310 |
| Base 11 | 1476911 | 1526911 |
| Base 12 | 1010712 | 1061112 |
| Base 13 | 967913 | 9ab713 |
| Base 14 | 787d14 | 7c3b14 |
| Base 15 | 62c715 | 660d15 |
| Base 16 | 519716 | 546d16 |