CODEWITHSUNDEEP
computer-science
Preet Sangha
Preet Sangha

Reputation: 65516

What symbols are used after base 36

Since Hex (base 16) uses 0-9A-F, and (I'm assuming here) Base 17 uses 0-9A-G and so on. What symbols are used once 0-9A-Z are all used up.

Upvotes: 26

Views: 4915

Answers (12)

tletnes
tletnes

Reputation: 1998

The Babylonians used Sexagesimal math with base 10 numbers in groupings to form base 60 digits for the various 60's places. (This is where we get all the base-60 math used in angles and time.) This is probably the oldest precedent for the method of creating some some form of base-N digit using base-10 numbers.

Upvotes: 12

Don Roby
Don Roby

Reputation: 41137

RAD50 got it to 40 (which is 50 in octal), not quite following this sequence. But hex wasn't so common then. Nor was lowercase.

Upvotes: 0

Jens Björnhager
Jens Björnhager

Reputation: 5649

I would say Greek and Hebrew are two likely candidates, as they are used in mathematics.

Upvotes: 2

JUST MY correct OPINION
JUST MY correct OPINION

Reputation: 36107

That's easy: 0..9 ++ A..Z ++ a..z ++ 阿..中. Couldn't be simpler.

Upvotes: 1

L̲̳o̲̳̳n̲̳̳g̲̳̳p̲̳o̲̳̳k̲̳̳e̲̳̳
L̲̳o̲̳̳n̲̳̳g̲̳̳p̲̳o̲̳̳k̲̳̳e̲̳̳

Reputation: 12570

well there's base64, and then Pokemon characters

Upvotes: 5

Gautham Ganapathy
Gautham Ganapathy

Reputation: 511

chinese maybe? wikipedia says that there are 47,035 characters in the Kangxi Dictionary!

Upvotes: 1

starblue
starblue

Reputation: 56782

The standard way to write IPv4 adresses can be viewed as a base 256 representation, where decimal numbers are separated by points.

Upvotes: 5

Simon
Simon

Reputation: 25983

I'd go for 0-9, then A-Z capitals, then alpha to omega in lower case. That gets you to 60. After that, I'd go with Jeremy's answer.

Upvotes: 1

Paige Ruten
Paige Ruten

Reputation: 176675

Digital clocks (base-60) use base-10 numbers as symbols and separate them with a separator symbol (like ':'). This way you'd never run out of symbols!

Upvotes: 16

joel.neely
joel.neely

Reputation: 30943

There is no standard answer for your question. "Base 36" is coincidentally convenient to talk about because:

  1. Hexadecimal conventionally uses 0-9a-f, so it's "obvious" to keep going through the alphabet.
  2. The Roman/ASCII alphabet runs out of steam at 'z'.
  3. Base 36 (regardless of how you represent it) is mildly interesting from a Mathematical perspective because 36 has so many divisors.

However, there's no universally-accepted convention for what sequence of characters one might venture into after 'z'.

Upvotes: 21

Jon Skeet
Jon Skeet

Reputation: 1500873

Well, look at base 64: 0-9, A-Z, a-z and then a few symbols depending on the context. (Base64 for the web tends to be different to other schemes to avoid URL/HTML encoding issues.)

Upvotes: 25

Jacob Carpenter
Jacob Carpenter

Reputation: 4132

Base64 adds the lowercase characters and + and /.

Upvotes: 10

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