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Base 21 to Binary (base 2)

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base 21 is a positional numeral system with twenty-one as its base. It uses 21 different digits for representing numbers. The digits for base 21 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, h, i, j, and k.

conversion table

base 21binary (base 2)base 21binary (base 2)
1= 1b= 1011
2= 10c= 1100
3= 11d= 1101
4= 100e= 1110
5= 101f= 1111
6= 110g= 10000
7= 111h= 10001
8= 1000i= 10010
9= 1001j= 10011
a= 1010k= 10100

In mathematics and digital electronics, a binary number is a number expressed in the binary numeral system or base-2 numeral system which represents numeric values using two different symbols: typically 0 (zero) and 1 (one). The base-2 system is a positional notation with a radix of 2. Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used internally by almost all modern computers and computer-based devices. Each digit is referred to as a bit.

conversion table

binary (base 2)base 21binary (base 2)base 21
1≈ 11011≈ b
10≈ 21100≈ c
11≈ 31101≈ d
100≈ 41110≈ e
101≈ 51111≈ f
110≈ 610000≈ g
111≈ 710001≈ h
1000≈ 810010≈ i
1001≈ 910011≈ j
1010≈ a10100≈ k