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Old 2020-08-14, 11:12   #416
garambois
 
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Oct 2011

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Quote:
Originally Posted by EdH View Post
Additionally, that ai+1 is a factor of s(a(i*n)) (n, a positive even integer)
Please, Ed, is your proposal complete ?

Because if we take, for example, a=10, n=4 and i=3, we have :

s(10^(4*3)) = s(10^12) = 1499694822171
and
10^3+1 = 1001

And 1001 do not divide 1499694822171.
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