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Old 2014-05-29, 11:50   #1
miket
 
May 2013

32 Posts
Default Can 1227133513 be the only composite number matching the conditions?

Conditions:

n such that O | n - 1 and O - 1 = 2^x , n āˆˆ 2N + 1, O = Ord_n(2), x āˆˆ Zā‰„0.

Can 1227133513 be the only composite number matching the conditions?

Erick Wong has check up to 10^20, see: Are there composite numbers matching the conditions?

More info of 1227133513: Ord_{1227133513}(2) = 33 and 33 | 2^33 - 1.
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