Compare 20981 vs 21587
| Property | 20981 | 21587 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209811 | 215871 |
| Prime factorization | 20981 | 21587 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20981 | 1, 21587 |
| Number of properties | 5 | 6 |
| Additive primes | 1124th | |
| Chen primes | 1161st | 1189th |
| Good primes | 265th | |
| Harmonic primes | 891st | |
| Primes | 2359th | 2423rd |
| Pythagorean primes | 1172nd | |
| Super primes | 360th | |
| Twin primes (1st member) | 357th | 367th |
| Roman numberals | ||
| Base 2 | 1010001111101012 | 1010100010100112 |
| Base 3 | 10012100023 | 10021211123 |
| Base 4 | 110133114 | 111011034 |
| Base 5 | 11324115 | 11423225 |
| Base 6 | 2410456 | 2435356 |
| Base 7 | 1151127 | 1166367 |
| Base 8 | 507658 | 521238 |
| Base 9 | 317029 | 325459 |
| Base 10 | 2098110 | 2158710 |
| Base 11 | 1484411 | 1524511 |
| Base 12 | 1018512 | 105ab12 |
| Base 13 | 971c13 | 9a9713 |
| Base 14 | 790914 | 7c1d14 |
| Base 15 | 633b15 | 65e215 |
| Base 16 | 51f516 | 545316 |