This number is a prime.

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Chinese Chao Lu made a mistake when he tried to recite the first 100000 digits of number pi: he said the 67891st digit is a "5" even though it is a "0". Ref: Delahaye J.P. (2018) Le fascinant nombre Pi. Paris, Belin, p. 292. [Olry]

Submitted: 2021-08-18 12:58:22;   Last Modified: 2021-08-18 13:05:18.
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