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Octal (base 8) to Base 31

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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)base 31octal (base 8)base 31
1= 113= b
2= 214= c
3= 315= d
4= 416= e
5= 517= f
6= 620= g
7= 721= h
10= 822= i
11= 923= j
12= a24= k
base 31 is a positional numeral system with thirty-one as its base. It uses 31 different digits for representing numbers. The digits for base 31 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, and u.

conversion table

base 31octal (base 8)base 31octal (base 8)
1≈ 1b≈ 13
2≈ 2c≈ 14
3≈ 3d≈ 15
4≈ 4e≈ 16
5≈ 5f≈ 17
6≈ 6g≈ 20
7≈ 7h≈ 21
8≈ 10i≈ 22
9≈ 11j≈ 23
a≈ 12k≈ 24