Compare 19891 vs 19894
| Property | 19891 | 19894 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 5 |
| Prime factorization | 198911 | 21 × 73 × 291 |
| Prime factorization | 19891 | 2 × 7 × 7 × 7 × 29 |
| Divisors count | 2 | 16 |
| Divisors | 1, 19891 | 1, 2, 7, 14, 29, 49, 58, 98, 203, 343, 406, 686, 1421, 2842, 9947, 19894 |
| Number of properties | 4 | 0 |
| Harmonic primes | 815th | |
| Palindromic primes | 45th | |
| Primes | 2250th | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101100112 | 1001101101101102 |
| Base 3 | 10000212013 | 10000212113 |
| Base 4 | 103123034 | 103123124 |
| Base 5 | 11140315 | 11140345 |
| Base 6 | 2320316 | 2320346 |
| Base 7 | 1116647 | 1120007 |
| Base 8 | 466638 | 466668 |
| Base 9 | 302519 | 302549 |
| Base 10 | 1989110 | 1989410 |
| Base 11 | 13a4311 | 13a4611 |
| Base 12 | b61712 | b61a12 |
| Base 13 | 909113 | 909413 |
| Base 14 | 736b14 | 737014 |
| Base 15 | 5d6115 | 5d6415 |
| Base 16 | 4db316 | 4db616 |