# Compare 191 vs 311

Property | 191 | 311 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 191^{1} | 311^{1} |

Prime factorization | 191 | 311 |

Divisors count | 2 | 2 |

Divisors | 1, 191 | 1, 311 |

Number of properties | 16 | 13 |

Additive primes | 24th | 36th |

Chen primes | 34th | 48th |

Class 1+ primes | 14th | |

Cousin primes (2nd member) | 18th | |

Emirps | 16th | |

Good primes | 16th | 23rd |

Harmonic primes | 15th | 26th |

Multiplicative primes | 13th | |

Palindromic primes | 10th | |

Pierpont primes of the 2nd kind | 14th | |

Primes | 43rd | 64th |

Prime quadruplets (1st member) | 4th | |

Prime triplets (1st member) | 13th | 19th |

Prime triplets (2nd member) | 18th | |

Right-truncatable primes | 17th | |

Sexy primes (1st member) | 25th | 36th |

Solinas primes | 25th | |

Sophie germain primes | 15th | |

Super primes | 14th | |

Thabit primes | 6th | |

Twin primes (1st member) | 14th | 20th |

Roman numberals | CXCI | CCCXI |

Base 2 | 10111111_{2} | 100110111_{2} |

Base 3 | 21002_{3} | 102112_{3} |

Base 4 | 2333_{4} | 10313_{4} |

Base 5 | 1231_{5} | 2221_{5} |

Base 6 | 515_{6} | 1235_{6} |

Base 7 | 362_{7} | 623_{7} |

Base 8 | 277_{8} | 467_{8} |

Base 9 | 232_{9} | 375_{9} |

Base 10 | 191_{10} | 311_{10} |

Base 11 | 164_{11} | 263_{11} |

Base 12 | 13b_{12} | 21b_{12} |

Base 13 | 119_{13} | 1ac_{13} |

Base 14 | d9_{14} | 183_{14} |

Base 15 | cb_{15} | 15b_{15} |

Base 16 | bf_{16} | 137_{16} |