Compare 20983 vs 20991
| Property | 20983 | 20991 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 209831 | 31 × 69971 |
| Prime factorization | 20983 | 3 × 6997 |
| Divisors count | 2 | 4 |
| Divisors | 1, 20983 | 1, 3, 6997, 20991 |
| Number of properties | 4 | 1 |
| Harmonic primes | 866th | |
| Long primes | 896th | |
| Primes | 2360th | |
| Semiprimes | 5325th | |
| Twin primes (2nd member) | 357th | |
| Roman numberals | ||
| Base 2 | 1010001111101112 | 1010001111111112 |
| Base 3 | 10012100113 | 10012101103 |
| Base 4 | 110133134 | 110133334 |
| Base 5 | 11324135 | 11324315 |
| Base 6 | 2410516 | 2411036 |
| Base 7 | 1151147 | 1151257 |
| Base 8 | 507678 | 507778 |
| Base 9 | 317049 | 317139 |
| Base 10 | 2098310 | 2099110 |
| Base 11 | 1484611 | 1485311 |
| Base 12 | 1018712 | 1019312 |
| Base 13 | 972113 | 972913 |
| Base 14 | 790b14 | 791514 |
| Base 15 | 633d15 | 634615 |
| Base 16 | 51f716 | 51ff16 |