# Compare 9 vs 11

Property | 9 | 11 |
---|---|---|

Type | semiprime | prime |

Unique factors | 1 | 1 |

Total factors | 2 | 1 |

Prime factorization | 3^{2} | 11^{1} |

Prime factorization | 3 × 3 | 11 |

Divisors count | 3 | 2 |

Divisors | 1, 3, 9 | 1, 11 |

Number of properties | 1 | 36 |

Additive primes | 5th | |

Centered decagonal primes | 1st | |

Chen primes | 5th | |

Class 1+ primes | 5th | |

Cousin primes (2nd member) | 2nd | |

Dihedral primes | 3rd | |

Good primes | 2nd | |

Lucas primes | 4th | |

Mills primes | 2nd | |

Palindromic primes | 5th | |

Pierpont primes of the 2nd kind | 5th | |

Primes | 5th | |

Prime quadruplets (1st member) | 2nd | |

Prime quadruplets (3rd member) | 1st | |

Prime quintuplet 1s (2nd member) | 1st | |

Prime quintuplet 2s (1st member) | 2nd | |

Prime quintuplet 2s (3rd member) | 1st | |

Prime sextuplets (2nd member) | 1st | |

Prime triplets (1st member) | 3rd | |

Prime triplets (2nd member) | 2nd | |

Prime triplets (3rd member) | 1st | |

Safe primes | 3rd | |

Semiprimes | 3rd | |

Sexy primes (1st member) | 3rd | |

Sexy primes (2nd member) | 1st | |

Sexy prime quadrupletss (1st member) | 2nd | |

Sexy prime quadrupletss (2nd member) | 1st | |

Sexy prime triplets (1st member) | 3rd | |

Sexy prime triplets (2nd member) | 1st | |

Solinas primes | 4th | |

Sophie germain primes | 4th | |

Super primes | 3rd | |

Thabit primes | 3rd | |

Twin primes (1st member) | 3rd | |

Ulam primes | 3rd | |

Wagstaff primes | 2nd | |

Wedderburn-etherington primes | 3rd | |

Roman numberals | IX | XI |

Base 2 | 1001_{2} | 1011_{2} |

Base 3 | 100_{3} | 102_{3} |

Base 4 | 21_{4} | 23_{4} |

Base 5 | 14_{5} | 21_{5} |

Base 6 | 13_{6} | 15_{6} |

Base 7 | 12_{7} | 14_{7} |

Base 8 | 11_{8} | 13_{8} |

Base 9 | 10_{9} | 12_{9} |

Base 10 | 9_{10} | 11_{10} |

Base 11 | 9_{11} | 10_{11} |

Base 12 | 9_{12} | b_{12} |

Base 13 | 9_{13} | b_{13} |

Base 14 | 9_{14} | b_{14} |

Base 15 | 9_{15} | b_{15} |

Base 16 | 9_{16} | b_{16} |