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Search for : 2^n+21


Rank
Probable prime
Digits (> 10000)
Who?
When?
10552^1173095+21353137Stefano Morozzi10/2022
67992^376731+21113408Lelio R Paula03/2013
89992^341355+21102759Lelio R Paula08/2011
91292^339168+21102100Lelio R Paula07/2011
193932^216752+2165249Lelio R Paula08/2011
200112^210061+2163235Donovan Johnson06/2006
607752^158497+2147713Donovan Johnson02/2006
636142^139476+2141987Donovan Johnson02/2006
652192^131383+2139551Donovan Johnson02/2006
707182^107287+2132297Donovan Johnson02/2006
1590082^81485+2124530Donovan Johnson04/2004
2605492^38859+2111698Donovan Johnson04/2004
2663852^36551+2111003Donovan Johnson04/2004
2833792^33843+2110188Donovan Johnson04/2004

Total : 14 PRP(s)



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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: September, 02 2025 19:01 (Time in France)