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Blog post explores expressing any integer using exactly four 2s

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A 2025 blog post on Eli Bendersky's site examines how any integer can be produced using only four instances of the digit 2. The piece is a mathematical puzzle write-up in the tradition of four-fours style challenges, combining arithmetic operations and functions to reach target values. It was shared on Hacker News, where it received 10 points and 3 comments. The article itself is not reproduced here, so this summary is limited to its general subject and how it circulated online.

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