Next prime | 41 |

Previous prime | 31 |

Octal | (45)_{8} |

Hexadecimal | (25)_{16} |

Prime gap | 4 |

6th Prime triplet (the smallest number) | The others are 41 and 43 . |

5th Cousin prime (the small number) | The big number is 41 . |

8th Sexy prime (the small number) | The big number is 43 . |

5th Prime of the Form 3n+1 | 5^{2} + 3 * 2^{2} |

5th Prime of the Form 4n+1 | 1^{2} + 6^{2} |

4th Emirp (reversible prime) | |

8th Left-truncatable prime | |

8th Right-truncatable prime | |

6th Two-sided prime |