# Compare 20 vs 47

Property | 20 | 47 |
---|---|---|

Type | composite number | prime |

Unique factors | 2 | 1 |

Total factors | 3 | 1 |

Prime factorization | 2^{2} × 5^{1} | 47^{1} |

Prime factorization | 2 × 2 × 5 | 47 |

Divisors count | 6 | 2 |

Divisors | 1, 2, 4, 5, 10, 20 | 1, 47 |

Number of properties | 0 | 21 |

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 | |

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 | XX | XLVII |

Base 2 | 10100_{2} | 101111_{2} |

Base 3 | 202_{3} | 1202_{3} |

Base 4 | 110_{4} | 233_{4} |

Base 5 | 40_{5} | 142_{5} |

Base 6 | 32_{6} | 115_{6} |

Base 7 | 26_{7} | 65_{7} |

Base 8 | 24_{8} | 57_{8} |

Base 9 | 22_{9} | 52_{9} |

Base 10 | 20_{10} | 47_{10} |

Base 11 | 19_{11} | 43_{11} |

Base 12 | 18_{12} | 3b_{12} |

Base 13 | 17_{13} | 38_{13} |

Base 14 | 16_{14} | 35_{14} |

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

Base 16 | 14_{16} | 2f_{16} |