Compare 639857 vs 639862
| Property | 639857 | 639862 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6398571 | 21 × 3199311 |
| Prime factorization | 639857 | 2 × 319931 |
| Divisors count | 2 | 4 |
| Divisors | 1, 639857 | 1, 2, 319931, 639862 |
| Number of properties | 6 | 1 |
| Chen primes | 20372nd | |
| Cousin primes (2nd member) | 5629th | |
| Isolated primes | 40805th | |
| Primes | 52066th | |
| Prime triplets (3rd member) | 2062nd | |
| Semiprimes | 137112th | |
| Sexy primes (2nd member) | 11284th | |
| Roman numberals | ||
| Base 2 | 100111000011011100012 | 100111000011011101102 |
| Base 3 | 10121112011023 | 10121112011213 |
| Base 4 | 21300313014 | 21300313124 |
| Base 5 | 1304334125 | 1304334225 |
| Base 6 | 214141456 | 214141546 |
| Base 7 | 53033217 | 53033267 |
| Base 8 | 23415618 | 23415668 |
| Base 9 | 11746429 | 11746479 |
| Base 10 | 63985710 | 63986210 |
| Base 11 | 3a780911 | 3a781311 |
| Base 12 | 26a35512 | 26a35a12 |
| Base 13 | 19531a13 | 19532213 |
| Base 14 | 12928114 | 12928614 |
| Base 15 | c98c215 | c98c715 |
| Base 16 | 9c37116 | 9c37616 |