Compare 28721 vs 28729
| Property | 28721 | 28729 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 71 × 111 × 3731 | 287291 |
| Prime factorization | 7 × 11 × 373 | 28729 |
| Divisors count | 8 | 2 |
| Divisors | 1, 7, 11, 77, 373, 2611, 4103, 28721 | 1, 28729 |
| Number of properties | 0 | 5 |
| Isolated primes | 2217th | |
| Primes | 3130th | |
| Pythagorean primes | 1556th | |
| Sexy primes (2nd member) | 921st | |
| Ulam primes | 238th | |
| Roman numberals | ||
| Base 2 | 1110000001100012 | 1110000001110012 |
| Base 3 | 11101012023 | 11101020013 |
| Base 4 | 130003014 | 130003214 |
| Base 5 | 14043415 | 14044045 |
| Base 6 | 3405456 | 3410016 |
| Base 7 | 1465107 | 1465217 |
| Base 8 | 700618 | 700718 |
| Base 9 | 433529 | 433619 |
| Base 10 | 2872110 | 2872910 |
| Base 11 | 1a64011 | 1a64811 |
| Base 12 | 1475512 | 1476112 |
| Base 13 | 100c413 | 100cc13 |
| Base 14 | a67714 | a68114 |
| Base 15 | 879b15 | 87a415 |
| Base 16 | 703116 | 703916 |