Compare 18900 vs 18911
| Property | 18900 | 18911 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 8 | 1 |
| Prime factorization | 22 × 33 × 52 × 71 | 189111 |
| Prime factorization | 2 × 2 × 3 × 3 × 3 × 5 × 5 × 7 | 18911 |
| Divisors count | 72 | 2 |
| Divisors | 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 35, 36, 42, 45, 50, 54, 60, 63, 70, 75, 84, 90, 100, 105, 108, 126, 135, 140, 150, 175, 180, 189, 210, 225, 252, 270, 300, 315, 350, 378, 420, 450, 525, 540, 630, 675, 700, 756, 900, 945, 1050, 1260, 1350, 1575, 1890, 2100, 2700, 3150, 3780, 4725, 6300, 9450, 18900 | 1, 18911 |
| Number of properties | 0 | 10 |
| Centered decagonal primes | 32nd | |
| Chen primes | 1066th | |
| Emirps | 590th | |
| Good primes | 247th | |
| Harmonic primes | 775th | |
| Primes | 2151st | |
| Prime quadruplets (1st member) | 18th | |
| Prime triplets (1st member) | 161st | |
| Sexy primes (1st member) | 658th | |
| Twin primes (1st member) | 326th | |
| Roman numberals | ||
| Base 2 | 1001001110101002 | 1001001110111112 |
| Base 3 | 2212210003 | 2212211023 |
| Base 4 | 102131104 | 102131334 |
| Base 5 | 11011005 | 11011215 |
| Base 6 | 2233006 | 2233156 |
| Base 7 | 1060507 | 1060647 |
| Base 8 | 447248 | 447378 |
| Base 9 | 278309 | 278429 |
| Base 10 | 1890010 | 1891110 |
| Base 11 | 1322211 | 1323211 |
| Base 12 | ab3012 | ab3b12 |
| Base 13 | 87ab13 | 87b913 |
| Base 14 | 6c6014 | 6c6b14 |
| Base 15 | 590015 | 590b15 |
| Base 16 | 49d416 | 49df16 |