Compare 990221 vs 990247
| Property | 990221 | 990247 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 2571 × 38531 | 431 × 230291 |
| Prime factorization | 257 × 3853 | 43 × 23029 |
| Divisors count | 4 | 4 |
| Divisors | 1, 257, 3853, 990221 | 1, 43, 23029, 990247 |
| Number of properties | 1 | 1 |
| Semiprimes | 208082nd | 208088th |
| Roman numberals | ||
| Base 2 | 111100011100000011012 | 111100011100001001112 |
| Base 3 | 12120220222123 | 12120221002113 |
| Base 4 | 33013000314 | 33013002134 |
| Base 5 | 2231413415 | 2231414425 |
| Base 6 | 331202056 | 331202516 |
| Base 7 | 112626417 | 112630067 |
| Base 8 | 36160158 | 36160478 |
| Base 9 | 17682859 | 17683249 |
| Base 10 | 99022110 | 99024710 |
| Base 11 | 616a7111 | 616a9511 |
| Base 12 | 3b906512 | 3b908712 |
| Base 13 | 28893b13 | 28895b13 |
| Base 14 | 1bac2114 | 1bac3d14 |
| Base 15 | 1485eb15 | 14861715 |
| Base 16 | f1c0d16 | f1c2716 |