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Search for : 2^n+21


Rank
Probable prime
Digits (> 10000)
Who?
When?
12502^1173095+21353137Stefano Morozzi10/2022
72132^376731+21113408Lelio R Paula03/2013
94442^341355+21102759Lelio R Paula08/2011
95742^339168+21102100Lelio R Paula07/2011
203422^216752+2165249Lelio R Paula08/2011
209852^210061+2163235Donovan Johnson06/2006
620562^158497+2147713Donovan Johnson02/2006
648952^139476+2141987Donovan Johnson02/2006
665002^131383+2139551Donovan Johnson02/2006
719992^107287+2132297Donovan Johnson02/2006
1602892^81485+2124530Donovan Johnson04/2004
2618302^38859+2111698Donovan Johnson04/2004
2676662^36551+2111003Donovan Johnson04/2004
2846602^33843+2110188Donovan Johnson04/2004

Total : 14 PRP(s)



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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: June, 14 2026 08:35 (Time in France)