Compare 20981 vs 21179
| Property | 20981 | 21179 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209811 | 211791 |
| Prime factorization | 20981 | 21179 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20981 | 1, 21179 |
| Number of properties | 5 | 7 |
| Chen primes | 1161st | 1170th |
| Good primes | 265th | |
| Isolated primes | 1662nd | |
| Long primes | 905th | |
| Primes | 2359th | 2381st |
| Pythagorean primes | 1172nd | |
| Safe primes | 199th | |
| Sophie germain primes | 345th | |
| Super primes | 353rd | |
| Twin primes (1st member) | 357th | |
| Roman numberals | ||
| Base 2 | 1010001111101012 | 1010010101110112 |
| Base 3 | 10012100023 | 10020011023 |
| Base 4 | 110133114 | 110223234 |
| Base 5 | 11324115 | 11342045 |
| Base 6 | 2410456 | 2420156 |
| Base 7 | 1151127 | 1155147 |
| Base 8 | 507658 | 512738 |
| Base 9 | 317029 | 320429 |
| Base 10 | 2098110 | 2117910 |
| Base 11 | 1484411 | 14a0411 |
| Base 12 | 1018512 | 1030b12 |
| Base 13 | 971c13 | 984213 |
| Base 14 | 790914 | 7a0b14 |
| Base 15 | 633b15 | 641e15 |
| Base 16 | 51f516 | 52bb16 |