Compare 20981 vs 21031
| Property | 20981 | 21031 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209811 | 210311 |
| Prime factorization | 20981 | 21031 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20981 | 1, 21031 |
| Number of properties | 5 | 3 |
| Additive primes | 1098th | |
| Chen primes | 1161st | |
| Good primes | 265th | |
| Isolated primes | 1650th | |
| Primes | 2359th | 2367th |
| Pythagorean primes | 1172nd | |
| Twin primes (1st member) | 357th | |
| Roman numberals | ||
| Base 2 | 1010001111101012 | 1010010001001112 |
| Base 3 | 10012100023 | 10012112213 |
| Base 4 | 110133114 | 110202134 |
| Base 5 | 11324115 | 11331115 |
| Base 6 | 2410456 | 2412116 |
| Base 7 | 1151127 | 1152137 |
| Base 8 | 507658 | 510478 |
| Base 9 | 317029 | 317579 |
| Base 10 | 2098110 | 2103110 |
| Base 11 | 1484411 | 1488a11 |
| Base 12 | 1018512 | 1020712 |
| Base 13 | 971c13 | 975a13 |
| Base 14 | 790914 | 794314 |
| Base 15 | 633b15 | 637115 |
| Base 16 | 51f516 | 522716 |