# Compare 181 vs 18181

Property | 181 | 18181 |
---|---|---|

Type | prime | prime |

Unique factors | 1 | 1 |

Total factors | 1 | 1 |

Prime factorization | 181^{1} | 18181^{1} |

Prime factorization | 181 | 18181 |

Divisors count | 2 | 2 |

Divisors | 1, 181 | 1, 18181 |

Number of properties | 8 | 9 |

Additive primes | 979th | |

Centered square primes | 6th | |

Chen primes | 33rd | |

Dihedral primes | 5th | 8th |

Harmonic primes | 754th | |

Isolated primes | 1444th | |

Long primes | 16th | |

Lucky primes | 341st | |

Palindromic primes | 9th | 42nd |

Primes | 42nd | 2083rd |

Pythagorean primes | 19th | 1029th |

Super primes | 314th | |

Twin primes (2nd member) | 13th | |

Roman numberals | CLXXXI | |

Base 2 | 10110101_{2} | 100011100000101_{2} |

Base 3 | 20201_{3} | 220221101_{3} |

Base 4 | 2311_{4} | 10130011_{4} |

Base 5 | 1211_{5} | 1040211_{5} |

Base 6 | 501_{6} | 220101_{6} |

Base 7 | 346_{7} | 104002_{7} |

Base 8 | 265_{8} | 43405_{8} |

Base 9 | 221_{9} | 26841_{9} |

Base 10 | 181_{10} | 18181_{10} |

Base 11 | 155_{11} | 12729_{11} |

Base 12 | 131_{12} | a631_{12} |

Base 13 | 10c_{13} | 8377_{13} |

Base 14 | cd_{14} | 68a9_{14} |

Base 15 | c1_{15} | 55c1_{15} |

Base 16 | b5_{16} | 4705_{16} |