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Search for : 2^k-k^2


Rank
Probable prime
Digits (> 10000)
Who?
When?
7742^1405715-1405715^2423163Henri Lifchitz03/2025
12152^1101167-1101167^2331485Henri Lifchitz07/2024
15282^954127-954127^2287221Henri Lifchitz01/2021
17882^851725-851725^2256395Henri Lifchitz03/2019
31852^608541-608541^2183190Henri Lifchitz02/2018
39382^525667-525667^2158242Henri Lifchitz12/2017
129052^307407-307407^292539Henri Lifchitz05/2005
133072^301683-301683^290816Henri Lifchitz05/2005
205142^205933-205933^261993Henri Lifchitz05/2005
233392^192023-192023^257805Henri Lifchitz05/2005
633122^141915-141915^242721Henri Lifchitz04/2005
676752^119087-119087^235849Henri Lifchitz03/2002
1599272^80307-80307^224175Henri Lifchitz12/2001
2046542^64773-64773^219499Henri Lifchitz12/2001
2139582^55525-55525^216715Henri Lifchitz12/2001
2309592^49989-49989^215049Henri Lifchitz11/2001

Total : 16 PRP(s)



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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: November, 27 2025 15:57 (Time in France)