Compare 669989 vs 669991
| Property | 669989 | 669991 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6699891 | 71 × 957131 |
| Prime factorization | 669989 | 7 × 95713 |
| Divisors count | 2 | 4 |
| Divisors | 1, 669989 | 1, 7, 95713, 669991 |
| Number of properties | 5 | 1 |
| Additive primes | 21202nd | |
| Chen primes | 21227th | |
| Happy primes | 7696th | |
| Isolated primes | 42588th | |
| Primes | 54309th | |
| Semiprimes | 143292nd | |
| Roman numberals | ||
| Base 2 | 101000111001001001012 | 101000111001001001112 |
| Base 3 | 10210010011023 | 10210010011113 |
| Base 4 | 22032102114 | 22032102134 |
| Base 5 | 1324144245 | 1324144315 |
| Base 6 | 222054456 | 222054516 |
| Base 7 | 54602157 | 54602207 |
| Base 8 | 24344458 | 24344478 |
| Base 9 | 12310429 | 12310449 |
| Base 10 | 66998910 | 66999110 |
| Base 11 | 41841111 | 41841311 |
| Base 12 | 28388512 | 28388712 |
| Base 13 | 1a5c5813 | 1a5c5a13 |
| Base 14 | 13624514 | 13624714 |
| Base 15 | d37ae15 | d37b115 |
| Base 16 | a392516 | a392716 |