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Positively congruent to a T (Posted on 2008-10-30) Difficulty: 3 of 5
Determine the total number of positive integers T ≥ 2, for which the relationship: Y25 ≡ Y (mod T) holds true for all possible values of a positive integer Y ≥ 2, where the "≡" symbol denotes congruence.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutioncomputer solution (spoiler)Charlie2008-10-30 11:10:06
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