Tuesday

July 29, 2014

July 29, 2014

Posted by **sasi** on Wednesday, July 2, 2014 at 8:46pm.

- math -
**Steve**, Thursday, July 3, 2014 at 12:22amThe smallest such number is 3*5*7 = 105

Since 64 <= 105 < 128

or

2^6 <= 105 < 2^7

That will require 7 digits: 1101001

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