# Compare 191 vs 281

Property | 191 | 281 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 191^{1} | 281^{1} |

Prime factorization | 191 | 281 |

Divisors count | 2 | 2 |

Divisors | 1, 191 | 1, 281 |

Number of properties | 16 | 10 |

Additive primes | 24th | 34th |

Centered decagonal primes | 7th | |

Chen primes | 34th | 45th |

Class 1+ primes | 14th | |

Cousin primes (2nd member) | 17th | |

Good primes | 16th | |

Harmonic primes | 15th | 23rd |

Palindromic primes | 10th | |

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

Primes | 43rd | 60th |

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

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

Prime triplets (2nd member) | 17th | |

Pythagorean primes | 28th | |

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

Solinas primes | 25th | |

Sophie germain primes | 15th | 19th |

Super primes | 14th | |

Thabit primes | 6th | |

Twin primes (1st member) | 14th | 19th |

Roman numberals | CXCI | CCLXXXI |

Base 2 | 10111111_{2} | 100011001_{2} |

Base 3 | 21002_{3} | 101102_{3} |

Base 4 | 2333_{4} | 10121_{4} |

Base 5 | 1231_{5} | 2111_{5} |

Base 6 | 515_{6} | 1145_{6} |

Base 7 | 362_{7} | 551_{7} |

Base 8 | 277_{8} | 431_{8} |

Base 9 | 232_{9} | 342_{9} |

Base 10 | 191_{10} | 281_{10} |

Base 11 | 164_{11} | 236_{11} |

Base 12 | 13b_{12} | 1b5_{12} |

Base 13 | 119_{13} | 188_{13} |

Base 14 | d9_{14} | 161_{14} |

Base 15 | cb_{15} | 13b_{15} |

Base 16 | bf_{16} | 119_{16} |