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Christian Lawson-Perfect @christianp

Further factorising-numbers-on-bottles-in-the-shower news: 55538 = 2 × 7 × 3967. I got as far as checking divisibility by 23, and now I'm dry I checked with isthisprime.com/3967

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@christianp I don't understand how Gauss was able to compute thousands of values of $\pi(x)$ in his head when he was bored. He must have been exaggerating.