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Old 2021-08-09, 14:31   #76
sweety439
 
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"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36

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Why (2^95369+1)/3 is not shown in http://www.ellipsa.eu/public/primo/top20.html? It has been proven to be prime, see https://primes.utm.edu/top20/page.php?id=67
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