Compare 28913 vs 28921
| Property | 28913 | 28921 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 291 × 9971 | 289211 |
| Prime factorization | 29 × 997 | 28921 |
| Divisors count | 4 | 2 |
| Divisors | 1, 29, 997, 28913 | 1, 28921 |
| Number of properties | 1 | 6 |
| Isolated primes | 2233rd | |
| Lucky primes | 489th | |
| Primes | 3148th | |
| Pythagorean primes | 1565th | |
| Semiprimes | 7191st | |
| Sexy primes (1st member) | 925th | |
| Sexy prime triplets (1st member) | 239th | |
| Roman numberals | ||
| Base 2 | 1110000111100012 | 1110000111110012 |
| Base 3 | 11101222123 | 11102000113 |
| Base 4 | 130033014 | 130033214 |
| Base 5 | 14111235 | 14111415 |
| Base 6 | 3415056 | 3415216 |
| Base 7 | 1502037 | 1502147 |
| Base 8 | 703618 | 703718 |
| Base 9 | 435859 | 436049 |
| Base 10 | 2891310 | 2892110 |
| Base 11 | 1a7a511 | 1a80211 |
| Base 12 | 1489512 | 148a112 |
| Base 13 | 1021113 | 1021913 |
| Base 14 | a77314 | a77b14 |
| Base 15 | 887815 | 888115 |
| Base 16 | 70f116 | 70f916 |