Compare 140 vs 149
| Property | 140 | 149 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 51 × 71 | 1491 |
| Prime factorization | 2 × 2 × 5 × 7 | 149 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140 | 1, 149 |
| Number of properties | 0 | 8 |
| Chen primes | 29th | |
| Emirps | 11th | |
| Good primes | 14th | |
| Harmonic primes | 12th | |
| Long primes | 13th | |
| Primes | 35th | |
| Pythagorean primes | 16th | |
| Twin primes (1st member) | 12th | |
| Roman numberals | CXL | CXLIX |
| Base 2 | 100011002 | 100101012 |
| Base 3 | 120123 | 121123 |
| Base 4 | 20304 | 21114 |
| Base 5 | 10305 | 10445 |
| Base 6 | 3526 | 4056 |
| Base 7 | 2607 | 3027 |
| Base 8 | 2148 | 2258 |
| Base 9 | 1659 | 1759 |
| Base 10 | 14010 | 14910 |
| Base 11 | 11811 | 12611 |
| Base 12 | b812 | 10512 |
| Base 13 | aa13 | b613 |
| Base 14 | a014 | a914 |
| Base 15 | 9515 | 9e15 |
| Base 16 | 8c16 | 9516 |