# Compare 18 vs 23

Property | 18 | 23 |
---|---|---|

Type | composite number | prime |

Unique factors | 2 | 1 |

Total factors | 3 | 1 |

Prime factorization | 2^{1} × 3^{2} | 23^{1} |

Prime factorization | 2 × 3 × 3 | 23 |

Divisors count | 6 | 2 |

Divisors | 1, 2, 3, 6, 9, 18 | 1, 23 |

Number of properties | 0 | 30 |

Additive primes | 6th | |

Chen primes | 9th | |

Class 1+ primes | 7th | |

Cousin primes (2nd member) | 4th | |

Factorial primes | 5th | |

Happy primes | 4th | |

Harmonic primes | 4th | |

Isolated primes | 2nd | |

Kynea primes | 3rd | |

Left-truncatable primes | 7th | |

Long primes | 4th | |

Pierpont primes of the 2nd kind | 7th | |

Primes | 9th | |

Prime quintuplet 2s (5th member) | 2nd | |

Prime sextuplets (6th member) | 1st | |

Prime triplets (3rd member) | 5th | |

Right-truncatable primes | 5th | |

Safe primes | 4th | |

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

Sexy primes (2nd member) | 5th | |

Sexy prime quadrupletss (4th member) | 1st | |

Sexy prime quadrupletss (3rd member) | 2nd | |

Sexy prime triplets (2nd member) | 4th | |

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

Solinas primes | 8th | |

Sophie germain primes | 5th | |

Thabit primes | 4th | |

Two-sided primes | 5th | |

Wedderburn-etherington primes | 4th | |

Woodall primes | 2nd | |

Roman numberals | XVIII | XXIII |

Base 2 | 10010_{2} | 10111_{2} |

Base 3 | 200_{3} | 212_{3} |

Base 4 | 102_{4} | 113_{4} |

Base 5 | 33_{5} | 43_{5} |

Base 6 | 30_{6} | 35_{6} |

Base 7 | 24_{7} | 32_{7} |

Base 8 | 22_{8} | 27_{8} |

Base 9 | 20_{9} | 25_{9} |

Base 10 | 18_{10} | 23_{10} |

Base 11 | 17_{11} | 21_{11} |

Base 12 | 16_{12} | 1b_{12} |

Base 13 | 15_{13} | 1a_{13} |

Base 14 | 14_{14} | 19_{14} |

Base 15 | 13_{15} | 18_{15} |

Base 16 | 12_{16} | 17_{16} |