Compare 6391 vs 6397
| Property | 6391 | 6397 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 71 × 111 × 831 | 63971 |
| Prime factorization | 7 × 11 × 83 | 6397 |
| Divisors count | 8 | 2 |
| Divisors | 1, 7, 11, 77, 83, 581, 913, 6391 | 1, 6397 |
| Number of properties | 0 | 5 |
| Isolated primes | 537th | |
| Left-truncatable primes | 117th | |
| Primes | 834th | |
| Pythagorean primes | 409th | |
| Restricted left-truncatable primes | 8th | |
| Roman numberals | ||
| Base 2 | 11000111101112 | 11000111111012 |
| Base 3 | 222022013 | 222022213 |
| Base 4 | 12033134 | 12033314 |
| Base 5 | 2010315 | 2010425 |
| Base 6 | 453316 | 453416 |
| Base 7 | 244307 | 244367 |
| Base 8 | 143678 | 143758 |
| Base 9 | 86819 | 86879 |
| Base 10 | 639110 | 639710 |
| Base 11 | 489011 | 489611 |
| Base 12 | 384712 | 385112 |
| Base 13 | 2ba813 | 2bb113 |
| Base 14 | 248714 | 248d14 |
| Base 15 | 1d6115 | 1d6715 |
| Base 16 | 18f716 | 18fd16 |