Compare 857 vs 861
| Property | 857 | 861 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 8571 | 31 × 71 × 411 |
| Prime factorization | 857 | 3 × 7 × 41 |
| Divisors count | 2 | 8 |
| Divisors | 1, 857 | 1, 3, 7, 21, 41, 123, 287, 861 |
| Number of properties | 9 | 0 |
| Chen primes | 101st | |
| Cousin primes (2nd member) | 35th | |
| Long primes | 52nd | |
| Primes | 148th | |
| Prime triplets (1st member) | 28th | |
| Prime triplets (2nd member) | 27th | |
| Pythagorean primes | 72nd | |
| Sexy primes (1st member) | 67th | |
| Twin primes (1st member) | 34th | |
| Roman numberals | DCCCLVII | DCCCLXI |
| Base 2 | 11010110012 | 11010111012 |
| Base 3 | 10112023 | 10112203 |
| Base 4 | 311214 | 311314 |
| Base 5 | 114125 | 114215 |
| Base 6 | 35456 | 35536 |
| Base 7 | 23337 | 23407 |
| Base 8 | 15318 | 15358 |
| Base 9 | 11529 | 11569 |
| Base 10 | 85710 | 86110 |
| Base 11 | 70a11 | 71311 |
| Base 12 | 5b512 | 5b912 |
| Base 13 | 50c13 | 51313 |
| Base 14 | 45314 | 45714 |
| Base 15 | 3c215 | 3c615 |
| Base 16 | 35916 | 35d16 |