Compare 990991 vs 990997
| Property | 990991 | 990997 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 4431 × 22371 | 71 × 671 × 21131 |
| Prime factorization | 443 × 2237 | 7 × 67 × 2113 |
| Divisors count | 4 | 8 |
| Divisors | 1, 443, 2237, 990991 | 1, 7, 67, 469, 2113, 14791, 141571, 990997 |
| Number of properties | 1 | 0 |
| Semiprimes | 208236th | |
| Roman numberals | ||
| Base 2 | 111100011111000011112 | 111100011111000101012 |
| Base 3 | 12121001011013 | 12121001011213 |
| Base 4 | 33013300334 | 33013301114 |
| Base 5 | 2232024315 | 2232024425 |
| Base 6 | 331235316 | 331235416 |
| Base 7 | 112651217 | 112651307 |
| Base 8 | 36174178 | 36174258 |
| Base 9 | 17703419 | 17703479 |
| Base 10 | 99099110 | 99099710 |
| Base 11 | 61760111 | 61760711 |
| Base 12 | 3b95a712 | 3b95b112 |
| Base 13 | 2890b113 | 2890b713 |
| Base 14 | 1bb21114 | 1bb21714 |
| Base 15 | 14896115 | 14896715 |
| Base 16 | f1f0f16 | f1f1516 |