perplexus.info :: Numbers : 8s and 9s

8s and 9s (Posted on 2011-12-21)

Find a 13 digit positive integer N whose base ten representation consists entirely of 8s and 9s such that 2¹³ divides N.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (2 votes)

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89!

| Comment 6 of 7 |

8898989989888

Posted by Math Man on 2012-01-01 14:55:49

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