Compare 27997 vs 28009
| Property | 27997 | 28009 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 279971 | 371 × 7571 |
| Prime factorization | 27997 | 37 × 757 |
| Divisors count | 2 | 4 |
| Divisors | 1, 27997 | 1, 37, 757, 28009 |
| Number of properties | 5 | 1 |
| Cousin primes (1st member) | 447th | |
| Harmonic primes | 1140th | |
| Isolated primes | 2164th | |
| Primes | 3055th | |
| Pythagorean primes | 1522nd | |
| Semiprimes | 6985th | |
| Roman numberals | ||
| Base 2 | 1101101010111012 | 1101101011010012 |
| Base 3 | 11021012213 | 11021021013 |
| Base 4 | 123111314 | 123112214 |
| Base 5 | 13434425 | 13440145 |
| Base 6 | 3333416 | 3334016 |
| Base 7 | 1444247 | 1444427 |
| Base 8 | 665358 | 665518 |
| Base 9 | 423579 | 423719 |
| Base 10 | 2799710 | 2800910 |
| Base 11 | 1a04211 | 1a05311 |
| Base 12 | 1425112 | 1426112 |
| Base 13 | c98813 | c99713 |
| Base 14 | a2bb14 | a2c914 |
| Base 15 | 846715 | 847415 |
| Base 16 | 6d5d16 | 6d6916 |