# Compare 821 vs 1019

Property | 821 | 1019 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 821^{1} | 1019^{1} |

Prime factorization | 821 | 1019 |

Divisors count | 2 | 2 |

Divisors | 1, 821 | 1, 1019 |

Number of properties | 10 | 9 |

Additive primes | 75th | 91st |

Chen primes | 97th | 117th |

Good primes | 40th | |

Long primes | 50th | 61st |

Primes | 142nd | 171st |

Prime quadruplets (1st member) | 5th | |

Prime triplets (1st member) | 25th | |

Pythagorean primes | 69th | |

Safe primes | 26th | |

Sexy primes (1st member) | 64th | |

Sexy primes (2nd member) | 75th | |

Solinas primes | 45th | |

Sophie germain primes | 39th | |

Twin primes (1st member) | 32nd | 36th |

Roman numberals | DCCCXXI | MXIX |

Base 2 | 1100110101_{2} | 1111111011_{2} |

Base 3 | 1010102_{3} | 1101202_{3} |

Base 4 | 30311_{4} | 33323_{4} |

Base 5 | 11241_{5} | 13034_{5} |

Base 6 | 3445_{6} | 4415_{6} |

Base 7 | 2252_{7} | 2654_{7} |

Base 8 | 1465_{8} | 1773_{8} |

Base 9 | 1112_{9} | 1352_{9} |

Base 10 | 821_{10} | 1019_{10} |

Base 11 | 687_{11} | 847_{11} |

Base 12 | 585_{12} | 70b_{12} |

Base 13 | 4b2_{13} | 605_{13} |

Base 14 | 429_{14} | 52b_{14} |

Base 15 | 39b_{15} | 47e_{15} |

Base 16 | 335_{16} | 3fb_{16} |