# Compare 18 vs 43

Property | 18 | 43 |
---|---|---|

Type | composite number | prime |

Unique factors | 2 | 1 |

Total factors | 3 | 1 |

Prime factorization | 2^{1} × 3^{2} | 43^{1} |

Prime factorization | 2 × 3 × 3 | 43 |

Divisors count | 6 | 2 |

Divisors | 1, 2, 3, 6, 9, 18 | 1, 43 |

Number of properties | 0 | 12 |

Additive primes | 9th | |

Centered heptagonal primes | 1st | |

Cousin primes (1st member) | 6th | |

Left-truncatable primes | 9th | |

Lucky primes | 6th | |

Primes | 14th | |

Prime triplets (2nd member) | 7th | |

Prime triplets (3rd member) | 6th | |

Sexy primes (2nd member) | 8th | |

Sexy prime triplets (3rd member) | 5th | |

Twin primes (2nd member) | 6th | |

Wagstaff primes | 3rd | |

Roman numberals | XVIII | XLIII |

Base 2 | 10010_{2} | 101011_{2} |

Base 3 | 200_{3} | 1121_{3} |

Base 4 | 102_{4} | 223_{4} |

Base 5 | 33_{5} | 133_{5} |

Base 6 | 30_{6} | 111_{6} |

Base 7 | 24_{7} | 61_{7} |

Base 8 | 22_{8} | 53_{8} |

Base 9 | 20_{9} | 47_{9} |

Base 10 | 18_{10} | 43_{10} |

Base 11 | 17_{11} | 3a_{11} |

Base 12 | 16_{12} | 37_{12} |

Base 13 | 15_{13} | 34_{13} |

Base 14 | 14_{14} | 31_{14} |

Base 15 | 13_{15} | 2d_{15} |

Base 16 | 12_{16} | 2b_{16} |