Compare 23981 vs 23990
| Property | 23981 | 23990 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 239811 | 21 × 51 × 23991 |
| Prime factorization | 23981 | 2 × 5 × 2399 |
| Divisors count | 2 | 8 |
| Divisors | 1, 23981 | 1, 2, 5, 10, 2399, 4798, 11995, 23990 |
| Number of properties | 10 | 0 |
| Additive primes | 1219th | |
| Centered square primes | 39th | |
| Chen primes | 1309th | |
| Cousin primes (2nd member) | 400th | |
| Isolated primes | 1864th | |
| Long primes | 1016th | |
| Primes | 2667th | |
| Pythagorean primes | 1326th | |
| Sophie germain primes | 381st | |
| Ulam primes | 197th | |
| Roman numberals | ||
| Base 2 | 1011101101011012 | 1011101101101102 |
| Base 3 | 10122200123 | 10122201123 |
| Base 4 | 113122314 | 113123124 |
| Base 5 | 12314115 | 12314305 |
| Base 6 | 3030056 | 3030226 |
| Base 7 | 1266267 | 1266417 |
| Base 8 | 566558 | 566668 |
| Base 9 | 358059 | 358159 |
| Base 10 | 2398110 | 2399010 |
| Base 11 | 1702111 | 1702a11 |
| Base 12 | 11a6512 | 11a7212 |
| Base 13 | abb913 | abc513 |
| Base 14 | 8a4d14 | 8a5814 |
| Base 15 | 718b15 | 719515 |
| Base 16 | 5dad16 | 5db616 |