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 ?
4501	2^494333-286183	148810	Enzo Doria	06/2015
4502	2^494144-264119	148753	Enzo Doria	05/2014
4503	6*10^148734+47	148735	Robert Price	06/2022
4504	28724^33353-33353^28724	148696	Frank Doornink	06/2024
4505	36502^11823+11823^36502	148663	Hans Havermann	11/2020
4506	(5*2^493838-1)/3721	148658	Lelio R Paula	10/2015
4507	64239^206+206^64239	148641	Hans Havermann	10/2020
4508	(23*2^493761-1)/555	148636	Lelio R Paula	10/2015
4509	(23*10^148627-137)/3	148628	Robert Price	08/2021
4510	(151*10^148601-1)/3	148603	Robert Price	03/2020
4511	2^493636+82081	148600	Enzo Doria	09/2016
4512	((((((((((((((34251^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2)^2-2	148593	Serge Batalov	07/2016
4513	27134^33509-33509^27134	148563	Frank Doornink	01/2024
4514	177487#+(519643#)/(177487#)	148558	Makoto Morimoto	11/2017
4515	(2*10^148460-23)/3	148460	Robert Price	04/2018
4516	(28*10^148445+101)/3	148446	Robert Price	09/2020
4517	2^493065+225	148428	Henri Lifchitz	11/2024
4518	36203^12556+12556^36203	148391	Hans Havermann	10/2020
4519	33912^23749+23749^33912	148387	Hans Havermann	10/2020
4520	(8*10^148328+1)/9	148328	Serge Batalov	05/2010
4521	34294^21117+21117^34294	148309	Hans Havermann	10/2020
4522	(71*10^148306-539)/9	148307	Robert Price	07/2019
4523	30814^33039-33039^30814	148304	Frank Doornink	06/2024
4524	38042^7875+7875^38042	148222	Hans Havermann	10/2020
4525	5^211959-12874	148153	Enzo Doria	05/2014
4526	34142^21831+21831^34142	148145	Hans Havermann	10/2020
4527	(288*21^112023-13)/5	148121	Eric Chen	03/2026
4528	10^148112+34059	148113	Patrick De Geest	05/2021
4529	10^148112-70000001	148112	Robert Price	03/2021
4530	10^148112-106593	148112	Patrick De Geest	05/2021
4531	36303^12016+12016^36303	148108	Hans Havermann	10/2020
4532	(77*10^148089-149)/9	148090	Robert Price	03/2022
4533	(16*10^148071+41)/3	148072	Robert Price	03/2019
4534	187^65175-2	148068	Lelio R Paula	11/2017
4535	2^491851+1871453	148062	Enzo Doria	05/2016
4536	(68*10^148060-257)/9	148061	Robert Price	07/2019
4537	Phi(162903,-5#)	148043	Henri Lifchitz	12/2025
4538	(151*10^148020-1)/3	148022	Robert Price	03/2020
4539	39153^6032+6032^39153	148017	Hans Havermann	10/2020
4540	36798^10507+10507^36798	147983	Hans Havermann	12/2020
4541	(26*10^147973-23)/3	147974	Robert Price	12/2019
4542	Phi(65997,11#)	147973	Henri Lifchitz	12/2025
4543	2^491521-1865323	147963	Enzo Doria	02/2016
4544	(2^491476+7)/71	147948	Lelio R Paula	10/2015
4545	2*10^147928+47	147929	Robert Price	12/2021
4546	2^491391-7807	147924	Lelio R Paula	01/2013
4547	2^491384+236221	147922	Enzo Doria	05/2025
4548	39736^5279+5279^39736	147920	Hans Havermann	11/2020
4549	2^491370-113297	147918	Enzo Doria	07/2014
4550	(3^707753)%F(707753)	147912	Henri Lifchitz	06/2025
4551	(32760^32760+32759^32759)/95546586737133567708319	147900	Robert Price	07/2016
4552	44368^2155+2155^44368	147899	Hans Havermann	12/2020
4553	(17*10^147890+79)/3	147891	Robert Price	04/2019
4554	94*10^147871-3	147873	Robert Price	05/2020
4555	10^147843+620967	147844	Patrick De Geest	05/2021
4556	10^147843-50000000001	147843	Robert Price	12/2020
4557	10^147843-182891	147843	Patrick De Geest	05/2021
4558	35805^13346+13346^35805	147709	Hans Havermann	11/2020
4559	2^490672+255255	147707	Paul Bourdelais	10/2021
4560	2^490660-17	147704	Lelio R Paula	12/2017
4561	(229*10^147699-1)/3	147701	Robert Price	07/2020
4562	40656^4289+4289^40656	147678	Hans Havermann	11/2020
4563	(85*10^147676-31)/9	147677	Rytis Slatkevicius	12/2024
4564	2^490550+1179439	147671	Enzo Doria	06/2016
4565	27249^33292-33292^27249	147662	Frank Doornink	06/2024
4566	(23*10^147649-59)/9	147650	Robert Price	05/2018
4567	2^490303+2793653	147596	Enzo Doria	03/2016
4568	2^490266+255255	147585	Paul Bourdelais	10/2021
4569	199^64181-2	147543	Lelio R Paula	11/2017
4570	32849^30958+30958^32849	147518	Hans Havermann	11/2020
4571	2^489871-286987	147466	Enzo Doria	07/2015
4572	2^489864-351899	147464	Enzo Doria	07/2015
4573	175^65724-2	147422	Lelio R Paula	11/2017
4574	2^489712+1874851	147419	Enzo Doria	06/2016
4575	34473^18830+18830^34473	147367	Hans Havermann	11/2020
4576	63^81896-2	147359	Lelio R Paula	10/2017
4577	34580^18237+18237^34580	147344	Hans Havermann	11/2020
4578	(11*10^147313-107)/3	147314	Robert Price	09/2018
4579	(397*10^147310+17)/9	147312	Robert Price	03/2022
4580	2^489305-59815	147296	Enzo Doria	10/2015
4581	(2^489280-7)/6381	147285	Lelio R Paula	09/2015
4582	2*10^147264-61	147265	Robert Price	10/2021
4583	2*10^147260+29	147261	Robert Price	02/2021
4584	33556^24457+24457^33556	147258	Hans Havermann	11/2020
4585	12^136450-11	147255	Riley Fisher	12/2024
4586	2^489125+80357	147242	Enzo Doria	06/2016
4587	10^147240-40000001	147240	Robert Price	07/2022
4588	10^147240-371331	147240	Alfred Reich	09/2024
4589	10^147240-464727	147240	Alfred Reich	09/2024
4590	32835^30452+30452^32835	147220	Hans Havermann	12/2020
4591	(19*10^147213-97)/3	147214	Robert Price	10/2021
4592	27123^33190-33190^27123	147143	Frank Doornink	01/2024
4593	(148*10^147139-1)/3	147141	Robert Price	03/2020
4594	34338^19255+19255^34338	147123	Hans Havermann	11/2020
4595	2^488648-112799	147098	Enzo Doria	07/2014
4596	2^488627-350317	147092	Enzo Doria	06/2015
4597	33432^25075+25075^33432	147076	Hans Havermann	12/2020
4598	(2^488441-1)/(61543567*30051203516986199)	147012	Dario Alpern	12/2014
4599	2^488280-2165	146987	Yves Minet	07/2014
4600	2^488278+45	146987	Lelio R Paula	12/2017
4601	(3^834646)/(2^834646)	146974	Henri Lifchitz	06/2025
4602	32568^32568+32561^32561	146973	Henri Lifchitz	08/2024
4603	2^487927-39	146881	Lelio R Paula	12/2017
4604	(7*10^146860-13)/3	146861	Robert Price	07/2018
4605	(26*10^146856-77)/3	146857	Robert Price	11/2019
4606	32948^28611+28611^32948	146834	Hans Havermann	11/2020
4607	42596^2799+2799^42596	146829	Hans Havermann	12/2020
4608	2^487726-1863341	146821	Enzo Doria	12/2015
4609	43838^2229+2229^43838	146775	Hans Havermann	11/2020
4610	35005^15594+15594^35005	146775	Hans Havermann	11/2020
4611	(167*10^146764+7)/3	146766	Robert Price	04/2021
4612	53^85114+85114	146761	Kellen Shenton	05/2022
4613	(59*10^146738+157)/9	146739	Robert Price	12/2021
4614	((10^73362-1)10000/9+6701)10^73362+(10^73362-1)/9	146728	Hans Havermann	09/2019
4615	32963^28234+28234^32963	146711	Hans Havermann	12/2020
4616	(22*10^146661-19)/3	146662	Robert Price	04/2019
4617	33958^20825+20825^33958	146651	Hans Havermann	12/2020
4618	26289^33178-33178^26289	146640	Frank Doornink	03/2024
4619	2^487121-39523	146639	Enzo Doria	09/2015
4620	61063^252+252^61063	146637	Hans Havermann	12/2020
4621	(7*2^486967+1)/39	146591	Lelio R Paula	09/2015
4622	34099^19900+19900^34099	146587	Hans Havermann	11/2020
4623	(10^146606+1)/2931129793051428557705609	146582	Anonymous	03/2026
4624	2^486893-79	146570	Yves Minet	09/2017
4625	36818^9567+9567^36818	146565	Hans Havermann	12/2020
4626	2^486840+1879141	146554	Enzo Doria	08/2016
4627	2^486774-87	146534	Lelio R Paula	12/2017
4628	38655^6176+6176^38655	146530	Hans Havermann	11/2020
4629	8*10^146522-81	146523	Robert Price	02/2021
4630	32820^29059+29059^32820	146485	Hans Havermann	12/2020
4631	37261^8530+8530^37261	146472	Hans Havermann	12/2020
4632	66953^154+154^66953	146462	Hans Havermann	12/2020
4633	96^73877-95^73877	146445	Robert Price	10/2015
4634	8*10^146421+81	146422	Robert Price	08/2019
4635	33153^26090+26090^33153	146420	Hans Havermann	11/2020
4636	2^486275+23961	146384	Enzo Doria	10/2023
4637	(12^135607-1)/18437127731	146335	Paul Vanderveen	06/2025
4638	(52^85259+1)/53	146304	Paul Bourdelais	09/2017
4639	179^64935+2	146290	Lelio R Paula	10/2017
4640	32595^30758+30758^32595	146285	Hans Havermann	11/2020
4641	34972^15157+15157^34972	146205	Hans Havermann	12/2020
4642	(16*10^146200+131)/3	146201	Robert Price	03/2022
4643	(19*10^146181-49)/3	146182	Robert Price	05/2019
4644	2^485531-114621	146160	Enzo Doria	05/2015
4645	2^485473-933075	146142	Paul Bourdelais	06/2021
4646	(2^485461-9)/4249	146135	Lelio R Paula	09/2015
4647	(22*10^146130-193)/9	146131	Robert Price	07/2022
4648	2^485389+81887	146117	Enzo Doria	08/2016
4649	32554^30773+30773^32554	146108	Hans Havermann	11/2020
4650	28075^32844-32844^28075	146101	Frank Doornink	06/2024
4651	(10^146063+71)/9	146063	Serge Batalov	07/2015
4652	2*10^146051-63	146052	Robert Price	01/2022
4653	(2^485119+7)/2745	146032	Lelio R Paula	09/2015
4654	(22*10^146029+257)/9	146030	Robert Price	06/2018
4655	7*10^145982-53	145983	Robert Price	06/2020
4656	2^484743+1872923	145923	Enzo Doria	05/2016
4657	33140^25287+25287^33140	145913	Hans Havermann	01/2021
4658	37875^7112+7112^37875	145895	Hans Havermann	01/2021
4659	30542^32529-32529^30542	145890	Frank Doornink	06/2024
4660	Phi(193945,-9)	145885	Henri Lifchitz	12/2025
4661	32862^27473+27473^32862	145872	Hans Havermann	01/2021
4662	V(1046652)/2093303	145817	Serge Batalov	07/2024
4663	32836^27587+27587^32836	145815	Hans Havermann	01/2021
4664	2^484341+1879157	145802	Enzo Doria	08/2016
4665	2*10^145784-91	145785	Robert Price	04/2020
4666	2^484271-51	145781	Lelio R Paula	11/2017
4667	(188*10^145750-11)/3	145752	Robert Price	02/2022
4668	70^78989-69^78989	145743	Robert Price	01/2014
4669	51^85334+2	145714	Robert Price	07/2015
4670	10^2^72843+72843^2^10	145687	Henri Lifchitz	03/2025
4671	2^483886-1857101	145665	Enzo Doria	10/2015
4672	29312^32607-32607^29312	145657	Frank Doornink	06/2024
4673	33350^23307+23307^33350	145656	Hans Havermann	01/2021
4674	(19*10^145585+131)/3	145586	Robert Price	06/2020
4675	31815^32332-32332^31815	145580	Frank Doornink	01/2024
4676	2^483563-1863457	145567	Enzo Doria	12/2015
4677	4*10^145563-69	145564	Robert Price	01/2022
4678	2^483516-1861409	145553	Enzo Doria	11/2015
4679	2^483384-115019	145514	Enzo Doria	06/2015
4680	(259*10^145501-1)/3	145503	Robert Price	12/2020
4681	(19*10^145499-61)/3	145500	Robert Price	05/2019
4682	2^483302-3221	145489	Lelio R Paula	12/2012
4683	(23*10^145463+61)/3	145464	Robert Price	01/2022
4684	35523^12434+12434^35523	145453	Hans Havermann	01/2021
4685	(29121^32761-1)/(29121^181-1)	145444	Ryan Propper	11/2023
4686	2^483046+1874029	145412	Enzo Doria	06/2016
4687	2^482991-2789317	145395	Enzo Doria	12/2015
4688	2^482978-2789711	145391	Enzo Doria	12/2015
4689	2^482966-2789711	145388	Enzo Doria	12/2015
4690	2^482817-1858843	145343	Enzo Doria	10/2015
4691	235*29^99378+4	145333	Eric Chen	06/2025
4692	2^482751-113635	145323	Enzo Doria	08/2014
4693	2^482705-459763	145309	Enzo Doria	05/2015
4694	412^55567+411	145302	Alfred Reich	03/2026
4695	(4^241306+11)/3	145281	Robert Price	03/2017
4696	(238*10^145276-1)/3	145278	Robert Price	04/2020
4697	(19*2^482534+1)/7	145258	Lelio R Paula	09/2015
4698	53^84239-52^84239	145252	Robert Price	01/2013
4699	U(1042497)	145243	Serge Batalov	07/2024
4700	2^482386+212419	145213	Enzo Doria	08/2023
4701	47952^1067+1067^47952	145207	Hans Havermann	01/2021
4702	(2^482333+5)/9287	145193	Lelio R Paula	09/2015
4703	2^482087+72623	145123	Enzo Doria	04/2016
4704	2^482016-286565	145102	Enzo Doria	07/2015
4705	(19*10^145093+101)/3	145094	Robert Price	09/2019
4706	2^481956+121	145084	Stefano Morozzi	04/2021
4707	27535^32676-32676^27535	145078	Frank Doornink	06/2024
4708	2^481840+15	145049	Robert Price	09/2015
4709	(23*10^145040+7)/3	145041	Robert Price	05/2023
4710	2^481801-481801	145037	Henri Lifchitz	03/2005
4711	2^481775+1869083	145029	Enzo Doria	05/2016
4712	29^99167+2	145022	Ray Chandler	08/2011
4713	2^481663+1875653	144996	Enzo Doria	07/2016
4714	8*10^144977+27	144978	Robert Price	09/2021
4715	29840^32393-32393^29840	144953	Frank Doornink	06/2024
4716	36486^9379+9379^36486	144929	Hans Havermann	12/2020
4717	31580^32209-32209^31580	144922	Frank Doornink	01/2024
4718	35111^13378+13378^35111	144882	Hans Havermann	01/2021
4719	2^481149-459073	144841	Enzo Doria	05/2015
4720	2^481113+181419	144830	Boyan Hu	04/2024
4721	34619^15246+15246^34619	144817	Hans Havermann	01/2021
4722	2^481045-113215	144809	Enzo Doria	07/2014
4723	(64*10^144797+287)/9	144798	Robert Price	04/2019
4724	27320^32629-32629^27320	144758	Frank Doornink	06/2024
4725	2^480859-113695	144753	Enzo Doria	09/2014
4726	(106*10^144744+17)/3	144746	Robert Price	04/2021
4727	7*10^144742-27	144743	Robert Price	11/2022
4728	2^480766-2787191	144725	Enzo Doria	11/2015
4729	(21*27^101106-151)/26	144720	Curtis Bright	05/2015
4730	28915^32438-32438^28915	144710	Frank Doornink	06/2024
4731	2^480678+1874239	144699	Enzo Doria	06/2016
4732	(8*10^144683+1)/9	144683	Serge Batalov	05/2010
4733	Phi(272901,-7)	144681	Henri Lifchitz	02/2026
4734	L(692147)	144651	Henri Lifchitz	10/2008
4735	(76*10^144648+77)/9	144649	Robert Price	10/2019
4736	32672^26721+26721^32672	144635	Hans Havermann	01/2021
4737	31478^32153-32153^31478	144625	Frank Doornink	01/2024
4738	2^480417+35	144620	Robert Price	11/2015
4739	2^480296-59879	144584	Enzo Doria	10/2015
4740	33157^22878+22878^33157	144546	Hans Havermann	12/2020
4741	27520^32541-32541^27520	144471	Frank Doornink	06/2024
4742	45494^1497+1497^45494	144454	Hans Havermann	12/2020
4743	2^479844+3	144448	Donovan Johnson	06/2006
4744	33442^20803+20803^33442	144407	Hans Havermann	01/2021
4745	(441*33^95095-3833)/32	144405	Eric Chen	12/2023
4746	31892^32061-32061^31892	144393	Norbert Schneider	01/2023
4747	(27*2^479642+1)/733	144386	Lelio R Paula	08/2015
4748	(56*10^144380+169)/9	144381	Robert Price	03/2022
4749	44917^1638+1638^44917	144378	Hans Havermann	12/2020
4750	(21*2^479605-1)/11	144376	Lelio R Paula	09/2015

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