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  2. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    Twenty is a base in the Maya and Aztec number systems. The Maya use the following names for the powers of twenty: kal (20), bak (20 2 = 400), pic (20 3 = 8,000), calab (20 4 = 160,000), kinchil (20 5 = 3,200,000) and alau (20 6 = 64,000,000). See Maya numerals and Maya calendar, Nahuatl language. The Inuit-Yupik-Unangax languages have base-20

  3. Maya numerals - Wikipedia

    en.wikipedia.org/wiki/Maya_numerals

    The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization. It was a vigesimal (base-20) positional numeral system. The numerals are made up of three symbols: zero (a shell), [1] one (a dot) and five (a bar). For example, thirteen is written as three dots in a horizontal row above two horizontal ...

  4. Mesoamerican Long Count calendar - Wikipedia

    en.wikipedia.org/wiki/Mesoamerican_Long_Count...

    Rather than using a base 10 scheme, the Long Count days were tallied in a modified base-20 scheme. In a pure base 20 scheme, 0.0.0.1.5 is equal to 25 and 0.0.0.2.0 is equal to 40. The Long Count is not pure base-20, however, since the second digit from the right (and only that digit) rolls over to zero when it reaches 18.

  5. Maya calendar - Wikipedia

    en.wikipedia.org/wiki/Maya_calendar

    The Maya numeral system was essentially vigesimal (i.e., base-20) and each unit of a given position represented 20 times the unit of the position which preceded it. An important exception was made for the second-order place value, which instead represented 18 × 20, or 360 days, more closely approximating the solar year than would 20 × 20 ...

  6. Mayan Calendar 2012: How The End-Of-The-World Myth Can ... - AOL

    www.aol.com/2012/12/20/mayan-calendar-if-the...

    Mayan civilization itself ended hundreds of years ago, but the calendar ticked. The Mayans were quite an advanced civilization. They had agriculture, written language and, as we've been learning ...

  7. Mesoamerican calendars - Wikipedia

    en.wikipedia.org/wiki/Mesoamerican_calendars

    The Maya version of the 260-day calendar is commonly known to scholars as the Tzolkin, or Tzolk'in in the revised orthography of the Academia de Lenguas Mayas de Guatemala. [23] The Tzolk'in is combined with the 365-day calendar (known as the Haab , or Haab' ), to form a synchronized cycle lasting for 52 Haabs, called the Calendar Round .

  8. Mayan Calendar 2012: How The End-Of-The-World Myth Can ... - AOL

    www.aol.com/news/2012-12-20-mayan-calendar-if...

    Mayan civilization itself ended hundreds of years ago, but the calendar ticked. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...

  9. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    "A base is a natural number B whose powers (B multiplied by itself some number of times) ... Maya numerals: 5 & 20 <15th Century: Muisca numerals: 20