Power n divisible by n powers

Number Theory Level 4

If \(S\) is the sum of all possible positive integers \(n\) such that \(\dfrac {10^n} {n^3+n^2+n+1} \) is an integer, what is the remainder when \(S\) is divided by 10?

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100 Day Summer Challenge

Power n divisible by n powers

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100 Day Summer Challenge

Power n divisible by n powers

Happy Valentine's Day & Chinese New Year Everyone!

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.