Talk:Postcard Code

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Olorin: maybe we should start listing the attempts that have been made to decode this number, even if they failed? Just so that nobody ends up repeating the same attempts?

Nik_Doof: Exactly what i was thinking when i made the page :)

Nik_Doof: I've edited the page, it was more a joke with the days melarky in the style of the Pie puzzle, but now we need it a tad more serious...

Christian Synthare: This might be a longshot, but there is a programming language called 23 ( which is made up entirely of groups of 2 and 3 numbers. Could this be it? (The "hello world" thing made me think of it. Hello world is a common program created in computer languages as a demonstration)

Nik_Doof: Probably better talking about this on the UnFiction forums...

Has anyone actually decoded the barcode stamp? That's a huge binary number, might make a key/cipher pair with the number beneath it. Angrymob 18:27, 4 Mar 2005 (GMT)
The semacode stamp decodes to as explained here - Nik Doof

PerplexHero: 2210 (the big number) is the postal code of Perplex City Academy. You can see this in Sente's contact info on the Academy website. - PerplexHero

The Sooges Link

New to this and don't know if this helps.

Solved 221545484848465100503215.htm


Bob Marley and the Wailers - Get Up, Stand Up.

Go to www.

What the hell is that?

221545484848465100503215 Theories

I have just recently come across all this and I am rather intrigued. I came across this while looking for cyphers to crack (Its a hobby). I have come up with several theories that I'm gonna put to test. They are as follows:

-The string of numbers could very well be a simple subtitution cypher, replacing the letters with numbers. To solve this, however, you need a "key." The string is 24 numbers long and such the key length is likely a factor of 24 (ie. 2,3,4,6, 8, 12, 0r 24) or a book key. If we assume that it is not a book key and by visual inspection of repetitions it is likely the key is 2,3,4 or 6.

-depending on if number pairs represent letters, key could be 2 -> not likely.

-if numbers are paired, 3 is likely due to the triple repetition of 48 -> likely.

-Key could easily by 4 digits in length, seems very likely due to pairing. Also, in regards to the mysterious "2210", this could be the key and the cheeky bastards put it right there to mock us.

- by pairing and repetition, a key length of 6 would fit nicely, but the triple 48's would have to suggest that the key is smaller (2,3,4)

The string of numbers could also be sets of numbers. During the prelaunch (, a file named "alison" was found and contained a set of numbers and letters. Adrian Hon dropped the hints: "Alison.Direction." The letters and numbers in the alison file appear to be TinyURL that REDIRECTS you to a site that used to contain information on the Beale Cyphers. I'm going to see if the solved potions of the Beale Cypher are recyled at all in 221545484848465100503215.

We should also take into account that the numbers may have been rearranged (a typical cypher trick). Read this site here on basics in encryption for some more ideas:

If you have any ideas, comments or question email me at

3 Letter/Number segments

The three number arrangement made me think of codons/anticodons. I can't offer much in the way of actually decrypting it though. There are a couple ways I could see this happening:

-Numbers for the different bases ACGT
-3 letters being codons that translate to either 3 Amino Acid abbreviations or single letter abbreviations

You might want to reference: