Compare 645139 vs 645149
| Property | 645139 | 645149 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 111 × 2231 × 2631 | 6451491 |
| Prime factorization | 11 × 223 × 263 | 645149 |
| Divisors count | 8 | 2 |
| Divisors | 1, 11, 223, 263, 2453, 2893, 58649, 645139 | 1, 645149 |
| Number of properties | 0 | 5 |
| Additive primes | 20506th | |
| Chen primes | 20517th | |
| Isolated primes | 41122nd | |
| Primes | 52461st | |
| Sophie germain primes | 5350th | |
| Roman numberals | ||
| Base 2 | 100111011000000100112 | 100111011000000111012 |
| Base 3 | 10122022220013 | 10122022221023 |
| Base 4 | 21312001034 | 21312001314 |
| Base 5 | 1311210245 | 1311210445 |
| Base 6 | 214544316 | 214544456 |
| Base 7 | 53246057 | 53246217 |
| Base 8 | 23540238 | 23540358 |
| Base 9 | 11828619 | 11828729 |
| Base 10 | 64513910 | 64514910 |
| Base 11 | 40078011 | 40078a11 |
| Base 12 | 27141712 | 27142512 |
| Base 13 | 19785113 | 19785b13 |
| Base 14 | 12b17514 | 12b18114 |
| Base 15 | cb24415 | cb24e15 |
| Base 16 | 9d81316 | 9d81d16 |