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How many steam keys are possible?

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wjf3

Steam keys are never reused, so I was thinking about how many possibilities there are...
So I calculated the amount of unique steam keys that are possible...
This is what I got...
3.7199333e+41
or
371993330000000000000000000000000000000000

So don't worry folks. Your keys are safe even though they are years old.

Edit: Thank you smart people... The real answer is 36^15 or 221,073,919,720,733,000,000,000. Still a big number though.

Edit: It seems that O and 1 is not used in steam keys. The real real answer is 34^15 or 9.3795879e+22

Edit: The exact amount is incalculable... Chaos Theory?

Edit: O, 1, S, and U are not used in steam keys, so not to be confused with 0, l, 5 and ? Still, they are used on rare occasions for whatever reason. Steamgifts user, pb1, mentioned that some keys from humblebundle.com start with HUMB. No doubt that humble paid a few extra dollars to make an acception.

6 years ago*

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78 Comments
Moogal

Interesting. Did you consider the fact that both letters and numbers are used? That compliactes things a bit. For example, does 1 "slot" always fill with a number or letter or can the amount of letters and numbers (and placement) vary in different keys?

6 years ago
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JustArchi

The length is not a problem, you have SteamGifts giveaway made out of just 5 letters, and if by any chance SG will ever need more, it can just add another character. Just because today it's 15 chars doesn't mean it can't be 16 tomorrow, and then you'll have ~30x as much as you have today.

Besides, the number has to be big enough to prevent bruteforcing, if the total number of keys reached even 1% of all available combinations, that would already be more than enough as an argument to increase the length. Even with all the millions of keys generated, revoked, used and unused, we're still in a super small fraction of possibilities.

6 years ago
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wjf3

Who said there was a problem? Everything you said has already been said previously. Guess it is time to close this discussion!

6 years ago
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Closed 6 years ago by wjf3.