Compare 19891 vs 19893
| Property | 19891 | 19893 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 198911 | 31 × 191 × 3491 |
| Prime factorization | 19891 | 3 × 19 × 349 |
| Divisors count | 2 | 8 |
| Divisors | 1, 19891 | 1, 3, 19, 57, 349, 1047, 6631, 19893 |
| Number of properties | 4 | 0 |
| Harmonic primes | 815th | |
| Palindromic primes | 45th | |
| Primes | 2250th | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101100112 | 1001101101101012 |
| Base 3 | 10000212013 | 10000212103 |
| Base 4 | 103123034 | 103123114 |
| Base 5 | 11140315 | 11140335 |
| Base 6 | 2320316 | 2320336 |
| Base 7 | 1116647 | 1116667 |
| Base 8 | 466638 | 466658 |
| Base 9 | 302519 | 302539 |
| Base 10 | 1989110 | 1989310 |
| Base 11 | 13a4311 | 13a4511 |
| Base 12 | b61712 | b61912 |
| Base 13 | 909113 | 909313 |
| Base 14 | 736b14 | 736d14 |
| Base 15 | 5d6115 | 5d6315 |
| Base 16 | 4db316 | 4db516 |