Compare 20979 vs 20981
| Property | 20979 | 20981 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 34 × 71 × 371 | 209811 |
| Prime factorization | 3 × 3 × 3 × 3 × 7 × 37 | 20981 |
| Divisors count | 20 | 2 |
| Divisors | 1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 2331, 2997, 6993, 20979 | 1, 20981 |
| Number of properties | 0 | 5 |
| Chen primes | 1161st | |
| Good primes | 265th | |
| Primes | 2359th | |
| Pythagorean primes | 1172nd | |
| Twin primes (1st member) | 357th | |
| Roman numberals | ||
| Base 2 | 1010001111100112 | 1010001111101012 |
| Base 3 | 10012100003 | 10012100023 |
| Base 4 | 110133034 | 110133114 |
| Base 5 | 11324045 | 11324115 |
| Base 6 | 2410436 | 2410456 |
| Base 7 | 1151107 | 1151127 |
| Base 8 | 507638 | 507658 |
| Base 9 | 317009 | 317029 |
| Base 10 | 2097910 | 2098110 |
| Base 11 | 1484211 | 1484411 |
| Base 12 | 1018312 | 1018512 |
| Base 13 | 971a13 | 971c13 |
| Base 14 | 790714 | 790914 |
| Base 15 | 633915 | 633b15 |
| Base 16 | 51f316 | 51f516 |