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 ?
7501	(10^110503-1)/9+510^70327+510^40175	110503	Makoto Morimoto	09/2020
7502	(10^110503-1)/9+510^99423+510^11079	110503	Makoto Morimoto	09/2020
7503	(10^110503-1)/9+7(10^23617-1)/910^43443	110503	Makoto Morimoto	09/2020
7504	(10^110503-1)/9+8(10^30251-1)/910^40126	110503	Makoto Morimoto	09/2020
7505	3(10^110503-1)/9+110^106036+1*10^4466	110503	Makoto Morimoto	09/2020
7506	3(10^110503-1)/9+110^58962+1*10^51540	110503	Makoto Morimoto	09/2020
7507	3(10^110503-1)/9+110^78213+1*10^32289	110503	Makoto Morimoto	09/2020
7508	3(10^110503-1)/9+210^76898+2*10^33604	110503	Makoto Morimoto	09/2020
7509	3(10^110503-1)/9-110^100802-1*10^9700	110503	Makoto Morimoto	09/2020
7510	3(10^110503-1)/9-110^76355-1*10^34147	110503	Makoto Morimoto	09/2020
7511	3(10^110503-1)/9-210^105704-2*10^4798	110503	Makoto Morimoto	09/2020
7512	7(10^110503-1)/9+1(10^27685-1)/9*10^41409	110503	Makoto Morimoto	09/2020
7513	7(10^110503-1)/9+1(10^91035-1)/9*10^9734	110503	Makoto Morimoto	09/2020
7514	7(10^110503-1)/9-1(10^23717-1)/9*10^43393	110503	Makoto Morimoto	09/2020
7515	7(10^110503-1)/9-110^57906-1*10^52596	110503	Makoto Morimoto	09/2020
7516	7(10^110503-1)/9-110^72287-1*10^38215	110503	Makoto Morimoto	09/2020
7517	7(10^110503-1)/9-2(10^53823-1)/9*10^28340	110503	Makoto Morimoto	09/2020
7518	7(10^110503-1)/9-2(10^88659-1)/9*10^10922	110503	Makoto Morimoto	09/2020
7519	7(10^110503-1)/9-3(10^79921-1)/9*10^15291	110503	Makoto Morimoto	09/2020
7520	7(10^110503-1)/9-310^60024-3*10^50478	110503	Makoto Morimoto	09/2020
7521	7(10^110503-1)/9-4(10^103091-1)/9*10^3706	110503	Makoto Morimoto	09/2020
7522	7(10^110503-1)/9-410^103658-4*10^6844	110503	Makoto Morimoto	09/2020
7523	7(10^110503-1)/9-410^78188-4*10^32314	110503	Makoto Morimoto	09/2020
7524	7(10^110503-1)/9-5(10^35035-1)/9*10^37734	110503	Makoto Morimoto	09/2020
7525	7(10^110503-1)/9-6(10^67347-1)/9*10^21578	110503	Makoto Morimoto	09/2020
7526	7(10^110503-1)/9-610^60391-6*10^50111	110503	Makoto Morimoto	09/2020
7527	(10^110503-1)-4(10^96247-1)/910^7128	110503	Makoto Morimoto	09/2020
7528	(10^110503-1)-410^74037-410^36465	110503	Makoto Morimoto	09/2020
7529	(10^110503-1)-410^77787-410^32715	110503	Makoto Morimoto	09/2020
7530	(10^110503-1)-410^91179-410^19323	110503	Makoto Morimoto	09/2020
7531	(10^110503-1)-5(10^99143-1)/910^5680	110503	Makoto Morimoto	09/2020
7532	(10^110503-1)-7(10^85075-1)/910^12714	110503	Makoto Morimoto	09/2020
7533	(10^110503-1)-710^100712-710^9790	110503	Makoto Morimoto	09/2020
7534	(10^110503-1)-710^76427-710^34075	110503	Makoto Morimoto	09/2020
7535	(10^110503-1)-710^90451-710^20051	110503	Makoto Morimoto	09/2020
7536	(10^110503-1)-810^106252-810^4250	110503	Makoto Morimoto	09/2020
7537	(11*10^110496+49)/3	110497	Robert Price	07/2018
7538	25447^21958+21958^25447	110481	Hans Havermann	11/2020
7539	(31*2^366976+1)/7	110472	Lelio R Paula	03/2014
7540	7*10^110468-23	110469	Robert Price	07/2019
7541	5*3^231464-2^231464	110438	Jon Grantham	08/2023
7542	2^366853+5711	110434	Lelio R Paula	05/2017
7543	(21181*2^366833+1)/3	110432	Lelio R Paula	07/2014
7544	(4^231439)%(3^231439)	110425	Henri Lifchitz	06/2025
7545	2^366816+315	110423	Lelio R Paula	05/2017
7546	(11^2667520)/(10^2667520)	110416	Henri Lifchitz	06/2025
7547	2^366775-2787037	110411	Enzo Doria	03/2016
7548	(112*10^110405-1)/3	110407	Serge Batalov	12/2014
7549	2^366751+2797553	110404	Enzo Doria	03/2016
7550	25276^23331+23331^25276	110404	Hans Havermann	10/2020
7551	2^366748+255	110403	Lelio R Paula	05/2017
7552	2^366738-2985	110400	Yves Minet	09/2014
7553	(23*2^366739+1)/74575	110396	Lelio R Paula	03/2014
7554	(2^366722+1314)/2	110395	Stefano Morozzi	02/2021
7555	2^366716+1871791	110393	Enzo Doria	05/2016
7556	(239*23^81066-349)/22	110391	Eric Chen	08/2023
7557	2^366695+1334025	110387	Henri Lifchitz	10/2024
7558	(5^528189)%F(528189)	110385	Henri Lifchitz	06/2025
7559	2^366649+1871687	110373	Enzo Doria	05/2016
7560	2^366629-351205	110367	Enzo Doria	06/2015
7561	(31*10^110363+257)/9	110364	Robert Price	12/2021
7562	(5^183291)%(4^183291)	110353	Henri Lifchitz	06/2025
7563	(17*19^86292-215)/18	110347	Eric Chen	01/2023
7565	2^366558+1874479	110345	Enzo Doria	06/2016
7564	25132^24581+24581^25132	110345	Hans Havermann	10/2020
7566	(2^366539+770)/2	110339	Stefano Morozzi	09/2020
7567	26368^15285+15285^26368	110331	Hans Havermann	10/2020
7568	(23*10^110290+19)/3	110291	Robert Price	07/2019
7569	18^87853-4409	110280	Enzo Doria	03/2013
7570	28490^7419+7419^28490	110267	Hans Havermann	11/2020
7571	2^366218-23	110243	Lelio R Paula	02/2013
7572	(21*2^366193-1)/197	110235	Lelio R Paula	03/2014
7573	2^366178-343991	110231	Enzo Doria	07/2015
7574	12^102123-11	110210	Riley Fisher	09/2023
7575	(725*35^71368+16649)/34	110199	Eric Chen	05/2025
7576	25777^18798+18798^25777	110174	Hans Havermann	10/2020
7577	2^365944+1871341	110161	Enzo Doria	05/2016
7578	2^365838-461267	110129	Enzo Doria	07/2015
7579	30152^4491+4491^30152	110126	Hans Havermann	11/2020
7580	2^365802+23359	110118	Enzo Doria	10/2023
7581	10^110111+464019	110112	Patrick De Geest	05/2021
7582	10^110111-40001	110111	Robert Price	01/2021
7583	2^365763-6555	110106	Lelio R Paula	04/2017
7584	(2^365689+2^182845+1)/5	110083		11/2006
7585	(83^57367-1)/3536509644718	110080	Paul Vanderveen	05/2025
7586	2^365666-459161	110077	Enzo Doria	05/2015
7587	3*10^110076-7	110077	Robert Price	08/2015
7588	(102936^21961-1)/102935	110076	Anonymous	09/2025
7589	13^98785-72	110041	Lelio R Paula	03/2017
7591	(25^78707+1)/26	110027	Robert Price	06/2013
7590	(7*10^110027-277)/9	110027	Robert Price	02/2022
7592	(16*10^110014-73)/3	110015	Robert Price	07/2020
7593	Phi(8869,17!)	110007	Henri Lifchitz	12/2025
7594	(7*10^110006-151)/9	110006	Robert Price	02/2018
7595	6^141361-7	110001	Lelio R Paula	11/2014
7596	10^110000+8029681	110001	Hayden Chesnut	11/2024
7597	10^110000+2044477	110001	Hayden Chesnut	11/2024
7598	10^110000+76407	110001	Hayden Chesnut	11/2024
7599	10^110000+167311	110001	Hayden Chesnut	11/2024
7600	20^84536+81	109984	Lelio R Paula	03/2017
7601	5*2^365347-9	109982	Lelio R Paula	09/2014
7602	9*6^141303+7	109957	Lelio R Paula	11/2014
7603	27635^9522+9522^27635	109953	Hans Havermann	11/2020
7604	78^58099+77	109929	Norbert Schneider	02/2015
7605	2*10^109928-7	109929	Robert Price	10/2015
7606	30580^3933+3933^30580	109927	Hans Havermann	11/2020
7607	26380^14689+14689^26380	109926	Hans Havermann	11/2020
7608	(2^365161+1130)/2	109925	Stefano Morozzi	09/2020
7609	(27*2^365137-1)/2021	109916	Lelio R Paula	03/2014
7610	29^75157-30	109910	Anonymous	09/2024
7611	(4441*29^75152-24)/7	109905	Curtis Bright	05/2015
7612	(2^365087+7)/6015	109899	Lelio R Paula	01/2014
7613	(2^365069+3774)/2	109897	Stefano Morozzi	02/2021
7614	29652^5083+5083^29652	109894	Mark Rodenkirch	10/2020
7615	(2^365049+722)/2	109891	Stefano Morozzi	09/2020
7616	(35*10^109888-89)/9	109889	Robert Price	02/2022
7617	18^87533-11	109878	Lelio R Paula	04/2017
7618	2^364982-5	109871	Henri Lifchitz	04/2006
7619	3*10^109861+59	109862	Robert Price	08/2018
7620	5*10^109860-69	109861	Robert Price	02/2021
7621	2^364936-1867979	109857	Enzo Doria	04/2016
7622	27013^11652+11652^27013	109846	Hans Havermann	10/2020
7623	2^364867-112087	109836	Enzo Doria	06/2014
7624	4^182415-85061	109825	Mike Oakes	06/2011
7625	(2^364809+1034)/2	109819	Stefano Morozzi	09/2020
7626	24972^24972-8323^8323	109814	Henri Lifchitz	10/2024
7627	(53*10^109809-287)/9	109810	Robert Price	02/2022
7628	(52*10^109807-133)/9	109808	Robert Price	09/2021
7629	25708^18675+18675^25708	109806	Hans Havermann	10/2020
7630	(17^89227+16^89227)/33	109788	Robert Price	08/2013
7631	2^364687-187	109782	Lelio R Paula	01/2012
7632	2^364644+67	109769	Lelio R Paula	01/2012
7633	(9787*2^364625-1)/24947	109763	Lelio R Paula	05/2015
7634	(2^364616+5)/9	109760	Lelio R Paula	01/2014
7635	(55*10^109759+89)/9	109760	Robert Price	03/2019
7636	(14*32^72921+4171)/31	109757	Eric Chen	04/2023
7637	12^101694+73	109747	Lelio R Paula	03/2017
7638	13^98518-66	109744	Lelio R Paula	03/2017
7639	(35^71069+2^71069)/37	109734	Robert Price	01/2025
7640	(8*10^109721-269)/9	109721	Robert Price	09/2021
7641	2^364478-113261	109719	Enzo Doria	07/2014
7642	(2^364513+1)/(3*44290516579)	109719	Gord Palameta	08/2018
7643	(24737*2^364454+1)/3	109716	Lelio R Paula	07/2014
7644	27814^8777+8777^27814	109681	Hans Havermann	10/2020
7645	(62*10^109673+1)/9	109674	Serge Batalov	11/2010
7646	3^229824+340	109654	Lelio R Paula	03/2017
7647	(16623*33^72206-8095)/16	109649	Eric Chen	05/2023
7648	(2*10^109645-71)/3	109645	Robert Price	12/2017
7649	V(786978)	109644	Serge Batalov	07/2024
7650	2^364169-112813	109626	Enzo Doria	06/2014
7651	28822^6359+6359^28822	109622	Hans Havermann	11/2020
7652	10^109615+21	109616	Lelio R Paula	03/2017
7653	10^109615-456267	109615	Patrick De Geest	03/2017
7654	522^40331-40331^522	109607	Norman Luhn	09/2024
7655	2^364094-113	109604	Lelio R Paula	01/2012
7656	25251^21898+21898^25251	109600	Hans Havermann	11/2020
7657	(4^182026+11)/3	109591	Robert Price	02/2017
7658	2^364041-6883	109588	Lelio R Paula	09/2011
7659	12^101545+11	109586	Lelio R Paula	03/2017
7660	26536^13475+13475^26536	109582	Hans Havermann	11/2020
7661	2^363842-2787101	109528	Enzo Doria	03/2016
7662	(2^363812+3570)/2	109519	Stefano Morozzi	09/2020
7663	(996^36527+1)/997	109515	Jinyuan Wang	12/2024
7664	(22699*2^363782+1)/763	109511	Lelio R Paula	07/2014
7665	2^363769+5711	109506	Lelio R Paula	04/2017
7666	(31*2^363748+1)/49	109499	Lelio R Paula	03/2014
7667	26^77372+25	109480	Anonymous	09/2024
7668	(2^363670+100280245065)	109476	Paul Bourdelais	05/2022
7669	p(22245)#/2-8	109462	Robert Price	01/2017
7670	2^363556+55	109442	Lelio R Paula	01/2012
7671	(509*10^109414+31)/9	109416	Robert Price	08/2022
7672	(2^363437+1682)/2	109406	Stefano Morozzi	09/2020
7673	(55459*2^363411+1)/81	109401	Lelio R Paula	07/2014
7674	2^363406+1871569	109397	Enzo Doria	05/2016
7675	(129^51829-1)/128	109388	Anonymous	06/2024
7676	(2^363370+1338)/2	109385	Stefano Morozzi	02/2021
7677	(2^363349+7)/9	109378	Lelio R Paula	01/2014
7678	(13869^26569-1)/(13869^163-1)	109375	Ryan Propper	11/2023
7679	3^229236+100	109374	Lelio R Paula	03/2017
7680	(2^363315+3258)/2	109369	Stefano Morozzi	02/2021
7681	2^363268-58695	109355	Lelio R Paula	04/2017
7682	2^363191-112321	109332	Enzo Doria	06/2014
7683	26231^14718+14718^26231	109327	Hans Havermann	10/2020
7684	25461^19672+19672^25461	109326	Hans Havermann	10/2020
7685	4*10^109316-63	109317	Robert Price	10/2018
7686	2^363120+3	109311	Donovan Johnson	04/2006
7687	(10^109297-1)/9	109297	Paul Bourdelais, Harvey Dubner	04/2007
7688	2^363042-114641	109287	Enzo Doria	04/2015
7689	2^363020-112793	109280	Enzo Doria	06/2014
7690	(8732^27889-1)/(8732^167-1)	109256	Ryan Propper	11/2023
7691	(85*10^109253+203)/9	109254	Robert Price	09/2020
7692	24990^23431+23431^24990	109202	Hans Havermann	10/2020
7693	Phi(369781,-2)	109200	Henri Lifchitz	12/2025
7694	(2^362746+3738)/2	109198	Stefano Morozzi	09/2020
7695	(2^362716+1282)/2	109189	Stefano Morozzi	01/2021
7696	(67607*2^362695+1)/70499	109183	Lelio R Paula	07/2014
7697	25060^22737+22737^25060	109180	Hans Havermann	10/2020
7698	(9*2^362644+1)/5	109167	Lelio R Paula	03/2014
7699	5^156181+38	109166	Lelio R Paula	02/2017
7700	(2^362623+3618)/2	109161	Stefano Morozzi	09/2020
7701	25138^21993+21993^25138	109157	Hans Havermann	10/2020
7702	4*10^109142+91	109143	Robert Price	08/2018
7703	3^228750+68	109142	Lelio R Paula	03/2017
7704	(2^362561+786)/2	109142	Stefano Morozzi	09/2020
7705	578*29^74623+7	109132	Eric Chen	06/2025
7706	(23*10^109113+61)/3	109114	Robert Price	01/2022
7707	2*10^109100-49	109101	Robert Price	09/2020
7708	(10223*2^362376+1)/9	109090	Lelio R Paula	07/2014
7709	65^60167-64^60167	109078	Robert Price	08/2013
7710	Phi(63393,-1105)	109075	Henri Lifchitz	12/2025
7711	7*3^228589-2	109066	Lelio R Paula	09/2014
7712	24874^24243+24243^24874	109063	Hans Havermann	11/2020
7713	(17*10^109059-161)/9	109060	Robert Price	02/2021
7714	29158^5495+5495^29158	109050	Hans Havermann	11/2020
7715	(78557*2^362188+1)/189	109033	Lelio R Paula	07/2014
7716	2*7^129008+9	109025	Lelio R Paula	11/2014
7717	88*10^109022+7	109024	Robert Price	03/2020
7718	28194^7337+7337^28194	108985	Hans Havermann	10/2020
7719	(5*10^108960+91)/3	108961	Robert Price	04/2018
7720	2^361957+76367	108960	Enzo Doria	05/2016
7721	(11*29^74504-245655)/28	108955	Eric Chen	06/2025
7722	2^361873-1411	108935	Yves Minet	01/2013
7723	(24737*2^361857+1)/35	108933	Lelio R Paula	07/2014
7724	216^216^216+91^91^91	108917	Henri Lifchitz	03/2025
7725	47^65132-65132^47	108908	Norman Luhn	09/2024
7726	115^52842-114	108892	Norbert Schneider	07/2018
7727	13^97745-24	108883	Lelio R Paula	03/2017
7728	(2^361696+2562)/2	108882	Stefano Morozzi	09/2020
7729	17^88475+8	108864	Lelio R Paula	04/2017
7730	2^361567+51	108843	Lelio R Paula	01/2012
7731	2^361563-109501	108842	Enzo Doria	04/2014
7732	12^100852+83	108838	Lelio R Paula	03/2017
7733	2^361497+767	108822	Lelio R Paula	01/2012
7734	L(520691)/78103651/1057002731/42794551909	108791	Serge Batalov	07/2024
7735	28019^7630+7630^28019	108785	Hans Havermann	10/2020
7736	24723^24758-24758^24723	108765	Norbert Schneider	11/2020
7737	2^361280-112349	108757	Enzo Doria	06/2014
7738	2^361271-5955	108754	Lelio R Paula	04/2017
7739	12^100757+19	108736	Lelio R Paula	03/2017
7740	25368^19333+19333^25368	108735	Hans Havermann	11/2020
7741	(2^361195+3618)/2	108731	Stefano Morozzi	09/2020
7742	2^361153-111546435	108718	Paul Bourdelais	10/2021
7743	14^94849-61	108710	Lelio R Paula	05/2017
7744	27267^9700+9700^27267	108708	Hans Havermann	11/2020
7745	(19^85009-5^85009)/14	108705	Robert Price	07/2013
7746	24832^23853+23853^24832	108704	Hans Havermann	11/2020
7747	27502^8963+8963^27502	108701	Hans Havermann	11/2020
7748	(130^51419-1)/129	108695	Anonymous	06/2024
7749	25807^16278+16278^25807	108689	Hans Havermann	11/2020
7750	39^68306+38	108680	Alfred Reich	03/2026

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