Octal (base 8) to Vigesimal (base 20)

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The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. Octal numerals can be made from binary numerals by grouping consecutive binary digits into groups of three (starting from the right). For example, the binary representation for decimal 74 is 1001010. Two zeroes can be added at the left: (00)1 001 010, corresponding the octal digits 1 1 2, yielding the octal representation 112.

conversion table

octal (base 8)18283848586878108118128
hexadecimal (base 16)120220320420520620720820920a20
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The vigesimal or base 20 numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten).

conversion table

hexadecimal (base 16)120220320420520620720820920a20
octal (base 8)18283848586878108118128