# Compare 1931 vs 1997

Property | 1931 | 1997 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 1931^{1} | 1997^{1} |

Prime factorization | 1931 | 1997 |

Divisors count | 2 | 2 |

Divisors | 1, 1931 | 1, 1997 |

Number of properties | 5 | 10 |

Chen primes | 182nd | 185th |

Cousin primes (2nd member) | 64th | |

Good primes | 64th | |

Harmonic primes | 108th | |

Left-truncatable primes | 62nd | |

Primes | 294th | 302nd |

Prime triplets (1st member) | 50th | |

Prime triplets (2nd member) | 49th | |

Pythagorean primes | 147th | |

Sexy primes (1st member) | 129th | |

Sophie germain primes | 59th | |

Twin primes (1st member) | 59th | 61st |

Roman numberals | MCMXXXI | MCMXCVII |

Base 2 | 11110001011_{2} | 11111001101_{2} |

Base 3 | 2122112_{3} | 2201222_{3} |

Base 4 | 132023_{4} | 133031_{4} |

Base 5 | 30211_{5} | 30442_{5} |

Base 6 | 12535_{6} | 13125_{6} |

Base 7 | 5426_{7} | 5552_{7} |

Base 8 | 3613_{8} | 3715_{8} |

Base 9 | 2575_{9} | 2658_{9} |

Base 10 | 1931_{10} | 1997_{10} |

Base 11 | 14a6_{11} | 1556_{11} |

Base 12 | 114b_{12} | 11a5_{12} |

Base 13 | b57_{13} | ba8_{13} |

Base 14 | 9bd_{14} | a29_{14} |

Base 15 | 88b_{15} | 8d2_{15} |

Base 16 | 78b_{16} | 7cd_{16} |