# Compare 47 vs 51

Property | 47 | 51 |
---|---|---|

Type | prime | semiprime |

Unique factors | 1 | 2 |

Total factors | 1 | 2 |

Prime factorization | 47^{1} | 3^{1} × 17^{1} |

Prime factorization | 47 | 3 × 17 |

Divisors count | 2 | 4 |

Divisors | 1, 47 | 1, 3, 17, 51 |

Number of properties | 21 | 1 |

Additive primes | 10th | |

Carol primes | 2nd | |

Chen primes | 14th | |

Class 1+ primes | 9th | |

Cousin primes (2nd member) | 6th | |

Isolated primes | 4th | |

Left-truncatable primes | 10th | |

Long primes | 6th | |

Lucas primes | 6th | |

Pierpont primes of the 2nd kind | 9th | |

Primes | 15th | |

Prime triplets (3rd member) | 7th | |

Safe primes | 5th | |

Semiprimes | 18th | |

Sexy primes (1st member) | 10th | |

Sexy primes (2nd member) | 9th | |

Sexy prime quadrupletss (2nd member) | 3rd | |

Sexy prime triplets (1st member) | 7th | |

Sexy prime triplets (2nd member) | 6th | |

Solinas primes | 13th | |

Thabit primes | 5th | |

Ulam primes | 5th | |

Roman numberals | XLVII | LI |

Base 2 | 101111_{2} | 110011_{2} |

Base 3 | 1202_{3} | 1220_{3} |

Base 4 | 233_{4} | 303_{4} |

Base 5 | 142_{5} | 201_{5} |

Base 6 | 115_{6} | 123_{6} |

Base 7 | 65_{7} | 102_{7} |

Base 8 | 57_{8} | 63_{8} |

Base 9 | 52_{9} | 56_{9} |

Base 10 | 47_{10} | 51_{10} |

Base 11 | 43_{11} | 47_{11} |

Base 12 | 3b_{12} | 43_{12} |

Base 13 | 38_{13} | 3c_{13} |

Base 14 | 35_{14} | 39_{14} |

Base 15 | 32_{15} | 36_{15} |

Base 16 | 2f_{16} | 33_{16} |