191

This number is a prime.

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Crockett Johnson based his painting Proof of the Pythagorean Theorem [Euclid] on a diagram in Ivor Thomas’s article on Greek mathematics in The World of Mathematics edited by James R. Newman (on page 191).

Submitted: 2020-04-24 19:27:50;   Last Modified: 2022-01-22 20:09:08.
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