Compare 128111 vs 128121
| Property | 128111 | 128121 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 1281111 | 31 × 71 × 61011 |
| Prime factorization | 128111 | 3 × 7 × 6101 |
| Divisors count | 2 | 8 |
| Divisors | 1, 128111 | 1, 3, 7, 21, 6101, 18303, 42707, 128121 |
| Number of properties | 6 | 0 |
| Chen primes | 5185th | |
| Emirps | 2416th | |
| Good primes | 781st | |
| Harmonic primes | 4515th | |
| Primes | 11993rd | |
| Twin primes (1st member) | 1495th | |
| Roman numberals | ||
| Base 2 | 111110100011011112 | 111110100011110012 |
| Base 3 | 201112012123 | 201112020203 |
| Base 4 | 1331012334 | 1331013214 |
| Base 5 | 130444215 | 130444415 |
| Base 6 | 24250356 | 24250536 |
| Base 7 | 10423347 | 10423507 |
| Base 8 | 3721578 | 3721718 |
| Base 9 | 2146559 | 2146669 |
| Base 10 | 12811110 | 12812110 |
| Base 11 | 8828511 | 8829411 |
| Base 12 | 6217b12 | 6218912 |
| Base 13 | 4640913 | 4641613 |
| Base 14 | 3498b14 | 3499714 |
| Base 15 | 27e5b15 | 27e6615 |
| Base 16 | 1f46f16 | 1f47916 |