Maths Olympiad Prep

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Algebra Difficulty 4.1 AIME Find the answer United States

Problem:
Find the largest prime factor of x10x8x6x4x21-x^{10}-x^{8}-x^{6}-x^{4}-x^{2}-1, where x=2ix=2i, i=1i=\sqrt{-1}.

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Solution

Solution:
13.

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Source: MathNet, licensed CC-BY-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.