# Compare 31 vs 67

Property | 31 | 67 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 31^{1} | 67^{1} |

Prime factorization | 31 | 67 |

Divisors count | 2 | 2 |

Divisors | 1, 31 | 1, 67 |

Number of properties | 18 | 17 |

Additive primes | 12th | |

Centered decagonal primes | 2nd | |

Centered triangular primes | 2nd | |

Chen primes | 11th | 17th |

Class 1+ primes | 8th | |

Cousin primes (1st member) | 7th | |

Emirps | 3rd | |

Euclid primes | 4th | |

Good primes | 9th | |

Happy primes | 5th | |

Harmonic primes | 6th | |

Isolated primes | 6th | |

Left-truncatable primes | 12th | |

Lucky primes | 4th | 7th |

Mersenne primes | 3rd | |

Multiplicative primes | 7th | |

Pierpont primes of the 2nd kind | 8th | |

Primes | 11th | 19th |

Prime triplets (1st member) | 8th | |

Right-truncatable primes | 7th | |

Sexy primes (1st member) | 7th | 13th |

Sexy primes (2nd member) | 12th | |

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

Sexy prime triplets (1st member) | 5th | 9th |

Sexy prime triplets (2nd member) | 8th | |

Solinas primes | 10th | 16th |

Super primes | 5th | 8th |

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

Roman numberals | XXXI | LXVII |

Base 2 | 11111_{2} | 1000011_{2} |

Base 3 | 1011_{3} | 2111_{3} |

Base 4 | 133_{4} | 1003_{4} |

Base 5 | 111_{5} | 232_{5} |

Base 6 | 51_{6} | 151_{6} |

Base 7 | 43_{7} | 124_{7} |

Base 8 | 37_{8} | 103_{8} |

Base 9 | 34_{9} | 74_{9} |

Base 10 | 31_{10} | 67_{10} |

Base 11 | 29_{11} | 61_{11} |

Base 12 | 27_{12} | 57_{12} |

Base 13 | 25_{13} | 52_{13} |

Base 14 | 23_{14} | 4b_{14} |

Base 15 | 21_{15} | 47_{15} |

Base 16 | 1f_{16} | 43_{16} |