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to a number in base 
.
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as numbers in the decimal number system.
and 
to numbers in the binary number system.
and 
to a number in base 
.
to numbers in the decimal number system.
in the decimal number system.
.
expressed in base 
less than the sum of the digits of the number 
expressed in base 
?
to a number system based on 
.
to a number system based on 
.
to a numberin base 
.
