Compare 309989 vs 309991
| Property | 309989 | 309991 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 3099891 | 111 × 281811 |
| Prime factorization | 309989 | 11 × 28181 |
| Divisors count | 2 | 4 |
| Divisors | 1, 309989 | 1, 11, 28181, 309991 |
| Number of properties | 4 | 1 |
| Chen primes | 10963rd | |
| Isolated primes | 20635th | |
| Primes | 26800th | |
| Semiprimes | 68715th | |
| Sophie germain primes | 2930th | |
| Roman numberals | ||
| Base 2 | 10010111010111001012 | 10010111010111001112 |
| Base 3 | 1202020200023 | 1202020200113 |
| Base 4 | 10232232114 | 10232232134 |
| Base 5 | 344044245 | 344044315 |
| Base 6 | 103510456 | 103510516 |
| Base 7 | 24305217 | 24305237 |
| Base 8 | 11353458 | 11353478 |
| Base 9 | 5222029 | 5222049 |
| Base 10 | 30998910 | 30999110 |
| Base 11 | 1a199911 | 1a19a011 |
| Base 12 | 12b48512 | 12b48712 |
| Base 13 | ab13413 | ab13613 |
| Base 14 | 80d8114 | 80d8314 |
| Base 15 | 61cae15 | 61cb115 |
| Base 16 | 4bae516 | 4bae716 |