Compare 281981 vs 281993
| Property | 281981 | 281993 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 402831 | 2819931 |
| Prime factorization | 7 × 40283 | 281993 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 40283, 281981 | 1, 281993 |
| Number of properties | 1 | 6 |
| Cousin primes (2nd member) | 2832nd | |
| Harmonic primes | 9185th | |
| Isolated primes | 18901st | |
| Long primes | 9223rd | |
| Primes | 24604th | |
| Semiprimes | 62745th | |
| Sophie germain primes | 2714th | |
| Roman numberals | ||
| Base 2 | 10001001101011111012 | 10001001101100010012 |
| Base 3 | 1120222102023 | 1120222110123 |
| Base 4 | 10103113314 | 10103120214 |
| Base 5 | 330104115 | 330104335 |
| Base 6 | 100132456 | 100133056 |
| Base 7 | 22530507 | 22530657 |
| Base 8 | 10465758 | 10466118 |
| Base 9 | 4687229 | 4687359 |
| Base 10 | 28198110 | 28199310 |
| Base 11 | 18294711 | 18295811 |
| Base 12 | 11722512 | 11723512 |
| Base 13 | 9b46b13 | 9b47a13 |
| Base 14 | 74a9714 | 74aa514 |
| Base 15 | 5883b15 | 5884815 |
| Base 16 | 44d7d16 | 44d8916 |