The base 10 system is often referred to as the *decimal system.* The base 60 system is called the *sexagesimal system.* (This should not be confused with the sexadecimal system—also called the hexadecimal system—or the digital system based on powers of 16.) A *sexagesimal counting table* is used to convert numbers using the 60 system into decimals, such as minutes and seconds.

The following table lists the common bases and corresponding number systems:

**Base Number System** |

2 binary |
9 nonary |

3 ternary |
10 decimal |

4 quaternary |
11 undenary |

5 quinary |
12 duodecimal |

6 senary |
16 hexadecimal |

7 septenary |
20 vigesimal |

8 octal |
60 sexagesimal |