# Compare 257 vs 263

Property | 257 | 263 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 257^{1} | 263^{1} |

Prime factorization | 257 | 263 |

Divisors count | 2 | 2 |

Divisors | 1, 257 | 1, 263 |

Number of properties | 16 | 14 |

Additive primes | 32nd | |

Chen primes | 42nd | 43rd |

Fermat primes | 4th | |

Good primes | 20th | |

Happy primes | 14th | |

Harmonic primes | 21st | |

Isolated primes | 22nd | 23rd |

Long primes | 21st | 22nd |

Pierpont primes | 14th | |

Primes | 55th | 56th |

Proth primes | 10th | |

Pythagorean primes | 25th | |

Quartan primes | 4th | |

Safe primes | 12th | |

Sexy primes (1st member) | 31st | 32nd |

Sexy primes (2nd member) | 30th | 31st |

Sexy prime quadrupletss (2nd member) | 5th | |

Sexy prime quadrupletss (3rd member) | 5th | |

Sexy prime triplets (1st member) | 16th | |

Sexy prime triplets (2nd member) | 15th | 16th |

Sexy prime triplets (3rd member) | 15th | |

Solinas primes | 31st | 32nd |

Roman numberals | CCLVII | CCLXIII |

Base 2 | 100000001_{2} | 100000111_{2} |

Base 3 | 100112_{3} | 100202_{3} |

Base 4 | 10001_{4} | 10013_{4} |

Base 5 | 2012_{5} | 2023_{5} |

Base 6 | 1105_{6} | 1115_{6} |

Base 7 | 515_{7} | 524_{7} |

Base 8 | 401_{8} | 407_{8} |

Base 9 | 315_{9} | 322_{9} |

Base 10 | 257_{10} | 263_{10} |

Base 11 | 214_{11} | 21a_{11} |

Base 12 | 195_{12} | 19b_{12} |

Base 13 | 16a_{13} | 173_{13} |

Base 14 | 145_{14} | 14b_{14} |

Base 15 | 122_{15} | 128_{15} |

Base 16 | 101_{16} | 107_{16} |