Compare 19880 vs 19891
| Property | 19880 | 19891 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 23 × 51 × 71 × 711 | 198911 |
| Prime factorization | 2 × 2 × 2 × 5 × 7 × 71 | 19891 |
| Divisors count | 32 | 2 |
| Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4970, 9940, 19880 | 1, 19891 |
| Number of properties | 0 | 4 |
| Harmonic primes | 815th | |
| Palindromic primes | 45th | |
| Primes | 2250th | |
| Twin primes (2nd member) | 340th | |
| Roman numberals | ||
| Base 2 | 1001101101010002 | 1001101101100112 |
| Base 3 | 10000210223 | 10000212013 |
| Base 4 | 103122204 | 103123034 |
| Base 5 | 11140105 | 11140315 |
| Base 6 | 2320126 | 2320316 |
| Base 7 | 1116507 | 1116647 |
| Base 8 | 466508 | 466638 |
| Base 9 | 302389 | 302519 |
| Base 10 | 1988010 | 1989110 |
| Base 11 | 13a3311 | 13a4311 |
| Base 12 | b60812 | b61712 |
| Base 13 | 908313 | 909113 |
| Base 14 | 736014 | 736b14 |
| Base 15 | 5d5515 | 5d6115 |
| Base 16 | 4da816 | 4db316 |