Compare 9720 vs 9721
| Property | 9720 | 9721 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 9 | 1 |
| Prime factorization | 23 × 35 × 51 | 97211 |
| Prime factorization | 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 5 | 9721 |
| Divisors count | 48 | 2 |
| Divisors | 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 810, 972, 1080, 1215, 1620, 1944, 2430, 3240, 4860, 9720 | 1, 9721 |
| Number of properties | 0 | 7 |
| Additive primes | 573rd | |
| Centered triangular primes | 19th | |
| Emirps | 226th | |
| Primes | 1199th | |
| Pythagorean primes | 596th | |
| Twin primes (2nd member) | 202nd | |
| Ulam primes | 87th | |
| Roman numberals | ||
| Base 2 | 100101111110002 | 100101111110012 |
| Base 3 | 1111000003 | 1111000013 |
| Base 4 | 21133204 | 21133214 |
| Base 5 | 3023405 | 3023415 |
| Base 6 | 1130006 | 1130016 |
| Base 7 | 402247 | 402257 |
| Base 8 | 227708 | 227718 |
| Base 9 | 143009 | 143019 |
| Base 10 | 972010 | 972110 |
| Base 11 | 733711 | 733811 |
| Base 12 | 576012 | 576112 |
| Base 13 | 456913 | 456a13 |
| Base 14 | 378414 | 378514 |
| Base 15 | 2d3015 | 2d3115 |
| Base 16 | 25f816 | 25f916 |