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| Numeral systems by culture | |
|---|---|
| Hindu-Arabic numerals | |
| Western Arabic Eastern Arabic Indian family |
Khmer Mongolian Thai |
| East Asian numerals | |
| Chinese Counting rods Japanese |
Korean Suzhou |
| Alphabetic numerals | |
| Abjad Armenian Āryabhaṭa Cyrillic |
Ge'ez Greek (Ionian) Hebrew |
| Other systems | |
| Attic Babylonian Brahmi Egyptian Etruscan |
Inuit Mayan Roman Urnfield |
| List of numeral system topics | |
| Positional systems by base | |
| Decimal (10) | |
| 2, 4, 8, 16, 32, 64 | |
| 1, 3, 6, 9, 12, 20, 24, 30, 36, 60, more… | |
This article is about a positional numerical system. For the content encoding scheme, see Base64.
The base-64 system is a numeral system with 64 as its base. It is the largest power-of-two base that can be represented using single printable ASCII characters. This has led to its use as a transfer encoding in the Base64 binary-to-text encoding scheme for e-mail among other things.
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