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randomaccount43543 OP ,

explainxkcd.com/2835

randomaccount43543 OP ,

I fell like this one really needs the explainxkcd and I still don’t get it 🤣

quindraco ,

I appreciated them correcting Randall’s bad alt-text math - he was off by a power of ten!

Spuddaccino ,

The idea is, each number is expressed as a sum of n factorials, with n being the number of digits in the number post-conversion. You start with the highest factorial that you can subtract out of the original number and work your way down.

1 becomes 1, because 1 = 1!, so the new number says “1x(1)”.

2 becomes 10, because 2 = 2!. The new number says “1x(2x1) + 0x(1)”.

3 becomes 11, because it’s 2 + 1. The new number says “1x(2x1) + 1x(1)”.

21 becomes 311: 4! is 24, so that’s too big, so we use 3!, which is 6. 3x6 = 18, so our number begins as 3XX.
That leaves 3 left over, which we know is 11. The new number says “3x(3x2x1) + 1x(2x1) + 1x(1)”.

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