Thread: xddd
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Old 2019-11-07, 20:25   #320
sweety439
 
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Nov 2016

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searched (b+1)*b^n+1 for bases 2<=b<=1000 (not including b end with 1, 4, 7 or X, since for these b, all such numbers are divisible by 3), up to n=1000
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