Compare 19801 vs 20021
| Property | 19801 | 20021 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 198011 | 200211 |
| Prime factorization | 19801 | 20021 |
| Divisors count | 2 | 2 |
| Divisors | 1, 19801 | 1, 20021 |
| Number of properties | 6 | 6 |
| Additive primes | 1042nd | 1051st |
| Centered square primes | 35th | |
| Chen primes | 1113th | |
| Emirps | 623rd | |
| Harmonic primes | 822nd | |
| Isolated primes | 1566th | |
| Primes | 2241st | 2264th |
| Pythagorean primes | 1113th | 1126th |
| Twin primes (1st member) | 343rd | |
| Roman numberals | ||
| Base 2 | 1001101010110012 | 1001110001101012 |
| Base 3 | 10000111013 | 10001101123 |
| Base 4 | 103111214 | 103203114 |
| Base 5 | 11132015 | 11200415 |
| Base 6 | 2314016 | 2324056 |
| Base 7 | 1115057 | 1122417 |
| Base 8 | 465318 | 470658 |
| Base 9 | 301419 | 304159 |
| Base 10 | 1980110 | 2002110 |
| Base 11 | 1397111 | 1405111 |
| Base 12 | b56112 | b70512 |
| Base 13 | 902213 | 916113 |
| Base 14 | 730514 | 742114 |
| Base 15 | 5d0115 | 5deb15 |
| Base 16 | 4d5916 | 4e3516 |