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> Likewise, if you start with a positive integer that ends in 6 and repeatedly raise it to the fifth power, you converge digit by digit toward the strange number

> b = ···743740081787109376

No you don't. Trying with 6, 16, 26, any number, you don't converge.



6^5 ends in ...76

6^25 ends in ...376

6^125 ends in ...9376

6^625 ends in ...09376

and so on




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