10000000010000000010000000010000000010000000010000000010000000011 is divisisble by 81. I calculated this number as an example in the process of finding a proof for the following proposition.

Every integer can be multiplied to a number consisting of only zeros and ones.

( No tricks, everything is in base 10. )

Doable with MS221 number theory, I suppose.

2-2018 Teaching by misleading

2 months ago

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