Henri & Renaud Lifchitz's PRP Top records

What is a PRP ?

A PRP is a probable prime number, a number that nobody knows how to prove or disprove its primality.
Here are some criterions that can be used to recognize these numbers :

- N does not have any prime factor up to 2^32.
- N cannot be trivially written into a product.
- Take 3 square-free consecutive bases such that (b1/N)=(b2/N)=(b3/N)= -1. N should be such that b1^((N-1)/2)=b2^((N-1)/2)=b3^((N-1)/2)= -1 (mod N).
- Take a prime base such that (b/N)= -1 and b<>b1<>b2<>b3. N should pass the strong test in base b.
- or more (if someone has got an idea) !!!

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1-250	251-500	501-750	751-1000	1001-1250	1251-1500	1501-1750	1751-2000
2001-2250	2251-2500	2501-2750	2751-3000	3001-3250	3251-3500	3501-3750	3751-4000
4001-4250	4251-4500	4501-4750	4751-5000	5001-5250	5251-5500	5501-5750	5751-6000
6001-6250	6251-6500	6501-6750	6751-7000	7001-7250	7251-7500	7501-7750	7751-8000
8001-8250	8251-8500	8501-8750	8751-9000	9001-9250	9251-9500	9501-9750	9751-10000

Rank	Probable prime	Digits (> 50000)	Who ?	When ?
7751	(9*2^359480+1)/5	108215	Lelio R Paula	03/2014
7752	2^359454-177	108207	Lelio R Paula	12/2011
7753	(19*10^108184+191)/3	108185	Robert Price	05/2019
7754	6^139022-59	108181	Lelio R Paula	02/2017
7755	(19*10^108176-43)/3	108177	Robert Price	05/2019
7756	2^359352-179	108176	Lelio R Paula	12/2011
7757	2^359338-1858781	108172	Enzo Doria	04/2016
7758	12^100230-97	108167	Lelio R Paula	03/2017
7759	27028^10043+10043^27028	108163	Hans Havermann	11/2020
7760	(25*2^359297-1)/137	108159	Lelio R Paula	03/2014
7761	(2^359262-509203)/9	108148	Lelio R Paula	12/2013
7762	26583^11702+11702^26583	108147	Hans Havermann	11/2020
7763	(3^226648-8)/352715633	108131	Lelio R Paula	12/2013
7764	6^138956-59	108129	Lelio R Paula	02/2017
7765	2^359184+30285	108126	Lelio R Paula	04/2017
7766	13^97059+10	108119	Lelio R Paula	03/2017
7767	2^359137-81	108112	Lelio R Paula	12/2011
7769	(15185*2^359105-1)/567	108103	Lelio R Paula	05/2015
7768	2^359110-11655	108103	Lelio R Paula	04/2017
7770	2^359069-933075	108091	Paul Bourdelais	06/2021
7771	26227^13222+13222^26227	108090	Hans Havermann	10/2020
7772	8*6^138875+5	108067	Lelio R Paula	11/2014
7773	2^358987-216919	108066	Enzo Doria	05/2014
7774	(2^358977+2714)/2	108063	Stefano Morozzi	09/2020
7775	39^67918-67918^39	108062	Norbert Schneider	02/2017
7776	24^78283-1*78283^24	108048	Dylan Delgado	12/2019
7777	25282^18767+18767^25282	108040	Hans Havermann	11/2020
7778	(918^36457-1)/917	108014	Tom Wu	08/2025
7779	2^358785-16933	108006	Enzo Doria	05/2013
7780	(2^358783+5)/33383	108000	Lelio R Paula	12/2013
7781	6^138770-77	107985	Lelio R Paula	02/2017
7782	(2^358727-1017)/94178479	107980	Lelio R Paula	12/2013
7783	10^107976+19	107977	Lelio R Paula	02/2017
7784	10^107976-202103	107976	Patrick De Geest	03/2017
7785	2^358684+75781	107975	Enzo Doria	04/2016
7786	24928^21411+21411^24928	107955	Hans Havermann	10/2020
7787	99^54094+2	107952	Lelio R Paula	06/2013
7788	(2^358583-9)/391	107942	Lelio R Paula	12/2013
7789	(2^358562+838)/2	107938	Stefano Morozzi	02/2021
7790	2^358538+55	107931	Lelio R Paula	12/2011
7791	2^358517-109009	107925	Enzo Doria	03/2014
7792	26395^12258+12258^26395	107914	Hans Havermann	10/2020
7793	3^226159+104	107906	Lelio R Paula	03/2017
7794	7*10^107870+39	107871	Robert Price	01/2023
7795	2^358310-11655	107863	Lelio R Paula	03/2017
7796	(68*10^107852-329)/9	107853	Robert Price	03/2021
7797	2^358275-112987	107852	Enzo Doria	07/2014
7798	3^226038+4	107848	Tyler NeSmith	01/2021
7799	2^358233-20005	107839	Enzo Doria	06/2013
7800	2^358194+175	107828	Lelio R Paula	12/2011
7801	107^53125-106	107812	Norbert Schneider	12/2016
7802	(25*10^107804+161)/3	107805	Robert Price	09/2019
7803	3^225922-2	107793	Lelio R Paula	10/2013
7804	12^99874-95	107783	Lelio R Paula	03/2017
7805	(2^358042+3042)/2	107782	Stefano Morozzi	09/2020
7806	2^358030-171	107778	Lelio R Paula	12/2011
7807	11^103488-4170	107772	Enzo Doria	12/2012
7808	2^357930-4547	107748	Yves Minet	03/2019
7809	2^357911-20089	107742	Enzo Doria	06/2013
7810	2^357885+12857	107735	Yves Minet	07/2010
7811	(248587#+9289)/(71327111512899)	107733	Makoto Morimoto	06/2019
7812	7^127473+40	107728	Lelio R Paula	03/2017
7813	5*2^357850+9	107725	Lelio R Paula	09/2014
7814	2^357786-291191	107705	Enzo Doria	06/2015
7815	28907^5320+5320^28907	107705	Hans Havermann	10/2020
7816	18^85798-23	107700	Lelio R Paula	04/2017
7817	3*10^107697+61	107698	Robert Price	09/2020
7818	(14*10^107694-83)/3	107695	Robert Price	12/2018
7819	2^357688-1854269	107675	Enzo Doria	09/2015
7820	2^357671-112225	107670	Enzo Doria	06/2014
7821	34323^1370+1370^34323	107662	Hans Havermann	11/2020
7822	2^357618-21005	107654	Enzo Doria	06/2013
7823	2^357615-17505	107653	Enzo Doria	05/2013
7824	26350^12171+12171^26350	107649	Hans Havermann	11/2020
7826	(30^72871-1)/29	107638	Robert Price	12/2011
7825	Phi(72871,5#)	107638	Henri Lifchitz	12/2025
7827	25021^20026+20026^25021	107631	Hans Havermann	11/2020
7828	2^357521+1870217	107625	Enzo Doria	05/2016
7829	2^357477-1203	107612	Lelio R Paula	03/2017
7830	26008^13693+13693^26008	107583	Hans Havermann	10/2020
7831	25432^16991+16991^25432	107583	Hans Havermann	10/2020
7832	(2^357371+3726)/2	107580	Stefano Morozzi	09/2020
7833	5^153894-18	107568	Lelio R Paula	02/2017
7834	2^357324-69059	107566	Enzo Doria	11/2015
7835	467^40296+40296^467	107563	Norbert Schneider	03/2019
7836	29446^4495+4495^29446	107559	Hans Havermann	10/2020
7837	(8*10^107556-149)/3	107557	Robert Price	12/2021
7838	2^357283-869688105	107553	Lelio R Paula	01/2017
7839	2^357280-16805	107552	Enzo Doria	05/2013
7840	10^107547+481719	107548	Patrick De Geest	03/2017
7841	10^107547-47	107547	Lelio R Paula	02/2017
7842	(23*10^107540+37)/3	107541	Robert Price	02/2022
7843	17^87396-32	107537	Lelio R Paula	04/2017
7844	(746*10^107505+1)/9	107507	Robert Price	03/2020
7845	(2^357125+1730)/2	107506	Stefano Morozzi	09/2020
7846	2^357081+107	107493	Lelio R Paula	12/2011
7847	2^357058-3911	107486	Yves Minet	04/2017
7848	3^225274+64	107484	Lelio R Paula	03/2017
7849	5*10^107482-57	107483	Robert Price	03/2021
7850	18^85619-95	107476	Lelio R Paula	04/2017
7851	Phi(118283,10)/102584248160709208281690489429805181088536061161	107473	Anonymous	01/2026
7852	(2^357013+2526)/2	107472	Stefano Morozzi	09/2020
7853	3^225248-130	107471	Lelio R Paula	03/2017
7854	(5*2^356961+1)/143	107455	Lelio R Paula	03/2014
7855	27029^9448+9448^27029	107450	Hans Havermann	11/2020
7856	2^356935-18085	107449	Enzo Doria	05/2013
7857	55396^87+87^55396	107442	Hans Havermann	10/2020
7858	(14*10^107439-137)/3	107440	Robert Price	04/2021
7859	164^48505-48505^164	107432	Norman Luhn	09/2024
7860	10^107409+37	107410	Lelio R Paula	02/2017
7861	10^107409-329633	107409	Patrick De Geest	03/2017
7862	(2^356799+3134)/2	107407	Stefano Morozzi	09/2020
7863	2^356787-109027	107404	Enzo Doria	04/2014
7864	(2^356767+78557)/5	107397	Lelio R Paula	12/2013
7865	3*10^107389+77	107390	Robert Price	09/2018
7866	(11*10^107385+61)/9	107386	Tyler Busby	01/2023
7867	5^153622-42	107378	Lelio R Paula	02/2017
7868	2^356699-97305	107378	Lelio R Paula	03/2017
7869	13129^26072-26072^13129	107371	Norbert Schneider	09/2022
7870	2^356654+85	107364	Lelio R Paula	11/2011
7871	2^356641-19921	107360	Enzo Doria	06/2013
7872	5*10^107355+11	107356	Robert Price	08/2019
7873	2^356623-465	107355	Lelio R Paula	03/2017
7874	19^83945-92	107345	Lelio R Paula	02/2017
7875	25491^16246+16246^25491	107337	Hans Havermann	11/2020
7876	10^107334+28149	107335	Patrick De Geest	03/2017
7877	10^107334-83	107334	Lelio R Paula	02/2017
7878	2^356518+885	107323	Lelio R Paula	03/2017
7879	(59*10^107322+391)/9	107323	Robert Price	03/2021
7880	(3*2^356506-1)/467	107317	Lelio R Paula	03/2014
7881	(2^356468+1162)/2	107308	Stefano Morozzi	09/2020
7882	2^356442-114713	107300	Enzo Doria	04/2015
7883	2^356425+72257	107295	Enzo Doria	04/2016
7884	2^356351-112237	107273	Enzo Doria	06/2014
7886	(6^137845-11)/5	107264	Paul Bourdelais	11/2011
7885	2^356322+74539	107264	Enzo Doria	04/2016
7887	2^356274+1874479	107250	Enzo Doria	06/2016
7888	24606^22819+22819^24606	107241	Hans Havermann	10/2020
7889	(2^356243+3686)/2	107240	Stefano Morozzi	09/2020
7890	20^82422-93	107234	Lelio R Paula	02/2017
7891	2^356157-20365	107214	Enzo Doria	06/2013
7892	8*10^107209+99	107210	Robert Price	03/2021
7893	2^356129-18949	107206	Enzo Doria	05/2013
7894	(15^91163-1)/13873078234414574	107200	Paul Vanderveen	06/2025
7895	2^356100-109587	107197	Enzo Doria	04/2014
7896	165^48333+164	107178	Norbert Schneider	03/2026
7897	2*10^107173-37	107174	Robert Price	11/2021
7898	(2^355978+3262)/2	107160	Stefano Morozzi	02/2021
7899	(31*2^355970+1)/5	107159	Lelio R Paula	03/2014
7900	2^355968-64875	107158	Lelio R Paula	01/2017
7901	2^355952+1870321	107153	Enzo Doria	05/2016
7902	27069^9088+9088^27069	107152	Hans Havermann	11/2020
7903	2^355915-117	107142	Lelio R Paula	11/2011
7904	(16*10^107140+77)/3	107141	Robert Price	03/2019
7905	24628^22369+22369^24628	107124	Hans Havermann	11/2020
7906	(19*2^355838-1)/15	107119	Lelio R Paula	03/2014
7908	3^224495-8	107112	Lelio R Paula	12/2013
7907	Phi(227687,3)	107112	Henri Lifchitz	12/2025
7909	3*10^107096+23	107097	Robert Price	03/2022
7910	25077^18632+18632^25077	107086	Hans Havermann	10/2020
7911	7^126691-44	107067	Lelio R Paula	03/2017
7912	4^177830-8243	107065	Mike Oakes	02/2011
7913	(509*10^107057+13)/9	107059	Robert Price	05/2022
7914	2^355604+214051	107048	Enzo Doria	10/2023
7915	(2^355562+1702)/2	107035	Stefano Morozzi	09/2020
7916	10^107028+3593037	107029	Paul Bourdelais	10/2021
7917	10^107028-43301	107028	Alfred Reich	08/2024
7918	2^355524-21237	107024	Enzo Doria	06/2013
7920	(10223*2^355515+1)/4855	107022	Lelio R Paula	07/2014
7919	24843^20320+20320^24843	107022	Hans Havermann	10/2020
7921	2^355494-19901	107015	Enzo Doria	06/2013
7922	2^355454-869688105	107003	Lelio R Paula	01/2017
7923	4*10^106997+13	106998	Robert Price	02/2021
7924	(8*10^106985-629)/9	106985	Robert Price	01/2022
7925	2^355366+54615	106976	Lelio R Paula	01/2017
7926	(31*2^355346-1)/1563	106969	Lelio R Paula	03/2014
7927	2^355275-19861	106949	Enzo Doria	06/2013
7928	27503^7738+7738^27503	106949	Hans Havermann	11/2020
7929	(85*10^106943+77)/9	106944	Robert Price	07/2022
7930	(9179*2^355234-1)/1915	106937	Lelio R Paula	05/2015
7931	4*10^106914-93	106915	Robert Price	07/2020
7932	(151^49069-1)/90910031243271150	106904	Paul Vanderveen	06/2025
7933	4*10^106892-3	106893	Robert Price	10/2015
7934	(66^58741+1)/67	106881	Paul Bourdelais	08/2017
7935	2^355001+335931	106866	Enzo Doria	08/2024
7936	2^354946-3	106850	M. Frind & P. Underwood	08/2002
7937	(2^354945+3134)/2	106849	Stefano Morozzi	09/2020
7938	(46^64384+1)/(46^128+1)	106843	Martin Hopf	12/2023
7939	2^354873-18693	106828	Enzo Doria	05/2013
7940	(2^354831+3186)/2	106815	Stefano Morozzi	09/2020
7942	2^354828+4257	106814	Lelio R Paula	01/2017
7941	25216^17217+17217^25216	106814	Hans Havermann	10/2020
7943	(2^354799+1218)/2	106805	Stefano Morozzi	09/2020
7944	436^40459+40459^436	106791	Norbert Schneider	03/2019
7945	(21^80761+1)/22	106783	Paul Bourdelais	03/2010
7946	(115*10^106772-7)/9	106774	Robert Price	02/2020
7947	2^354640-354640+1	106758	Robert Price	10/2014
7948	(2^354603+2606)/2	106746	Stefano Morozzi	09/2020
7949	2^354585+95	106741	Lelio R Paula	10/2011
7950	(206*10^106737+1)/9	106739	Robert Price	04/2022
7951	2^354553+189	106732	Lelio R Paula	10/2011
7953	(2^354546+1338)/2	106729	Stefano Morozzi	02/2021
7952	(8*10^106729-71)/9	106729	Serge Batalov	11/2022
7954	2^354514-109031	106720	Enzo Doria	04/2014
7955	2^354509-109465	106718	Enzo Doria	04/2014
7956	fibonacci(510628)+2	106715	Jon Grantham	08/2023
7957	(15*2^354478-1)/26983	106706	Lelio R Paula	03/2014
7958	Phi(217618,10)/899798636917	106693	Makoto Kamada	06/2019
7959	15^90710+28	106684	Lelio R Paula	04/2017
7960	7^126237+34	106683	Lelio R Paula	03/2017
7961	2^354385-115315	106681	Enzo Doria	06/2015
7962	2^354327-19305	106664	Enzo Doria	06/2013
7963	(35*10^106649+1)/9	106650	Serge Batalov	11/2010
7964	10^106636+97	106637	Lelio R Paula	02/2017
7965	10^106636-22923	106636	Patrick De Geest	03/2017
7966	2^354220-57	106631	Lelio R Paula	10/2011
7967	(68*10^106628-329)/9	106629	Robert Price	03/2021
7968	(29*10^106620-77)/3	106621	Robert Price	02/2020
7969	(746*10^106618+1)/9	106620	Robert Price	03/2020
7970	2*10^106613+29	106614	Robert Price	02/2021
7971	2^354157-17041	106612	Enzo Doria	05/2013
7972	12^98778+73	106600	Lelio R Paula	02/2017
7973	Phi(447629,-2)	106594	Henri Lifchitz	12/2025
7974	33333^1576+1576^33333	106585	Hans Havermann	11/2020
7975	2^354064+1870651	106584	Enzo Doria	05/2016
7976	24568^21779+21779^24568	106577	Hans Havermann	11/2020
7977	2^353992-57	106563	Lelio R Paula	10/2011
7978	9*10^106559+59	106560	Robert Price	01/2020
7979	7*10^106553+27	106554	Robert Price	11/2020
7980	28847^4938+4938^28847	106548	Hans Havermann	10/2020
7981	(20^81901-1)/42030774209	106546	Paul Vanderveen	06/2025
7983	NSW(139160)	106535	Robert Price	12/2018
7982	f(278321)	106535	Robert Price	07/2023
7984	(7*10^106516+113)/3	106517	Robert Price	02/2018
7985	2^353832-1853849	106515	Enzo Doria	09/2015
7988	(7^126037-1)/6	106513	Paul Bourdelais	09/2008
7986	Phi(126037,7)	106513	Henri Lifchitz	12/2025
7987	Phi(252074,-7)	106513	Henri Lifchitz	02/2026
7989	2^353794-18453	106503	Enzo Doria	05/2013
7990	(2^353761+2094)/2	106493	Stefano Morozzi	09/2020
7991	2^353728+7695	106483	Lelio R Paula	01/2017
7992	26476^10509+10509^26476	106475	Hans Havermann	10/2020
7993	2^353672-303	106466	Yves Minet	02/2012
7994	6^136811+101	106460	Lelio R Paula	02/2017
7995	2^353641+1871981	106457	Enzo Doria	05/2016
7996	(8*10^106454-29)/3	106455	Robert Price	07/2018
7997	27845^6654+6654^27845	106454	Hans Havermann	11/2020
7998	10^106449-700001	106449	Robert Price	08/2021
7999	25316^16017+16017^25316	106444	Hans Havermann	11/2020
8000	2^353553+54615	106431	Lelio R Paula	01/2017

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