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 ?
5751	2^430415-276271	129568	Enzo Doria	07/2015
5752	32282^10311+10311^32282	129558	Hans Havermann	04/2021
5753	29486^24741+24741^29486	129545	Hans Havermann	04/2021
5754	(29*10^129543+313)/9	129544	Robert Price	04/2021
5755	37095^3104+3104^37095	129533	Hans Havermann	04/2021
5756	31132^14459+14459^31132	129514	Hans Havermann	04/2021
5757	32582^9435+9435^32582	129506	Hans Havermann	03/2021
5758	30442^17953+17953^30442	129505	Hans Havermann	03/2021
5759	(199*10^129487-7)/3	129489	Robert Price	05/2020
5760	2^430142-2791721	129486	Enzo Doria	03/2016
5761	(7*10^129472-13)/3	129473	Robert Price	07/2018
5762	(8*10^129469+79)/3	129470	Robert Price	10/2020
5763	31678^12213+12213^31678	129463	Hans Havermann	04/2021
5764	10620^32143-10619^32143	129412	Norbert Schneider	08/2023
5765	(772*10^129406-7)/9	129408	Robert Price	06/2022
5766	(535^47431-1)/534	129406	Tom Wu	09/2024
5767	((320425-8193)F(618977)-(20425-8193)*L(618977))/2	129363	Yaroslav Berezhko	03/2025
5768	31100^14439+14439^31100	129362	Hans Havermann	04/2021
5769	33009^8288+8288^33009	129345	Hans Havermann	04/2021
5770	25895^29306-29306^25895	129334	Frank Doornink	03/2024
5771	(44^78697+43^78697)/87	129333	Aurel Gibier	11/2023
5772	29675^22804+22804^29675	129324	Hans Havermann	04/2021
5773	29068^28099+28099^29068	129315	Hans Havermann	04/2021
5774	2^429568-21017	129313	Enzo Doria	07/2013
5775	(10^129295+83)/3	129295	Robert Price	08/2021
5776	(853*10^129274-7)/9	129276	Robert Price	07/2021
5777	998^43100+997	129263	Alfred Reich	03/2026
5778	30958^14961+14961^30958	129249	Hans Havermann	04/2021
5779	(11*10^129239-179)/3	129240	Robert Price	09/2018
5780	28659^28988+28988^28659	129208	Norbert Schneider	02/2021
5781	29423^24616+24616^29423	129203	Hans Havermann	03/2021
5782	2^429194-112685	129201	Enzo Doria	06/2014
5783	31*35^83672+17398	129197	Eric Chen	05/2025
5784	2^429145-2780449	129186	Enzo Doria	04/2016
5785	32500^9427+9427^32500	129168	Hans Havermann	04/2021
5786	33577^7014+7014^33577	129136	Hans Havermann	03/2021
5787	2^428892-113453	129110	Enzo Doria	07/2014
5788	(11*2^428881-7)/15	129106	Renaud Lifchitz	03/2011
5789	2^428727-113959	129060	Enzo Doria	10/2014
5790	(7*2^428725-1)/13	129059	Lelio R Paula	05/2014
5791	(10^129051-31)/3	129051	Serge Batalov	12/2014
5792	(3^732836)/(2^732836)	129047	Henri Lifchitz	05/2025
5793	(134*10^129038+7)/3	129040	Robert Price	02/2020
5794	2^428564+71161	129011	Enzo Doria	04/2016
5795	28781^28930+28930^28781	129002	Norbert Schneider	02/2021
5796	29065^27424+27424^29065	128995	Hans Havermann	04/2021
5797	2^428502-113285	128992	Enzo Doria	07/2014
5798	2^428421-21373	128968	Enzo Doria	06/2013
5799	L(616787)	128901	Henri Lifchitz	09/2008
5800	(765^44701-1)/764	128900	Tom Wu	07/2024
5801	20^99055-3	128874	Paul Bourdelais	12/2020
5802	91^65772-2	128851	Lelio R Paula	05/2017
5803	2^428022+43	128848	Lelio R Paula	05/2017
5804	2^427999-459397	128841	Enzo Doria	05/2015
5805	2^427993+76847	128839	Enzo Doria	05/2016
5806	31059^14060+14060^31059	128833	Hans Havermann	03/2021
5807	10^128805+152871	128806	Patrick De Geest	05/2021
5808	10^128805-10001	128805	Robert Price	02/2021
5809	2^427824-1851507	128788	Enzo Doria	08/2015
5810	2^427807-21469	128783	Enzo Doria	07/2013
5811	29082^26783+26783^29082	128772	Hans Havermann	04/2021
5812	40055^1638+1638^40055	128750	Hans Havermann	04/2021
5813	(923^43411-1)/922	128720	Tom Wu	07/2024
5814	11^123594-240	128710	Enzo Doria	09/2012
5815	2^427504-21503	128692	Enzo Doria	07/2013
5816	37727^2574+2574^37727	128673	Hans Havermann	04/2021
5817	29686^21591+21591^29686	128668	Hans Havermann	04/2021
5818	10^128668-70000000001	128668	Robert Price	08/2021
5819	10^128668-350729	128668	Alfred Reich	08/2024
5820	Phi(57476,13#)	128668	Henri Lifchitz	12/2025
5821	2^427420+91	128667	Lelio R Paula	05/2017
5822	8*10^128651-37	128652	Robert Price	03/2022
5823	(68*10^128645-257)/9	128646	Robert Price	07/2019
5824	Phi(236553,7)	128631	Henri Lifchitz	12/2025
5825	2^427269-113635	128621	Enzo Doria	08/2014
5826	136^60270+135	128589	Alfred Reich	03/2026
5827	2^427130+1877569	128579	Enzo Doria	08/2016
5828	2^427068+20011	128561	Enzo Doria	06/2023
5829	2^427016-115349	128545	Enzo Doria	07/2015
5830	2^427001+1334025	128541	Henri Lifchitz	11/2024
5831	(4*10^128510+137)/3	128511	Robert Price	03/2018
5832	2^426889-112879	128507	Enzo Doria	06/2014
5833	2^426804+1869931	128481	Enzo Doria	05/2016
5834	2^426750+77635	128465	Enzo Doria	05/2016
5835	27708^28913-28913^27708	128450	Frank Doornink	03/2024
5836	36988^2969+2969^36988	128445	Hans Havermann	03/2021
5837	36664^3185+3185^36664	128439	Hans Havermann	03/2021
5838	32618^8649+8649^32618	128416	Hans Havermann	04/2021
5839	28883^27874+27874^28883	128391	Hans Havermann	04/2021
5840	2^426425-91	128367	Lelio R Paula	05/2017
5841	(15*2^426398-1)/11	128359	Lelio R Paula	05/2014
5842	2^426352+74971	128345	Enzo Doria	04/2016
5843	(199*10^128343-7)/3	128345	Robert Price	05/2020
5844	4*10^128343-21	128344	Robert Price	09/2018
5845	(65*10^128338+493)/9	128339	Robert Price	08/2021
5846	35632^3997+3997^35632	128337	Hans Havermann	04/2021
5847	2^426300-1863689	128330	Enzo Doria	03/2016
5848	2^426293+1881017	128327	Enzo Doria	11/2016
5849	(88*10^128324-637)/9	128325	Robert Price	11/2020
5850	Phi(161347,7)	128320	Henri Lifchitz	12/2025
5851	Phi(135199,-9)	128312	Henri Lifchitz	12/2025
5852	(491*10^128285+31)/9	128287	Robert Price	04/2022
5853	39103^1908+1908^39103	128281	Hans Havermann	04/2021
5854	2^426043+35	128252	Robert Price	11/2015
5855	(4*10^128244-19)/3	128245	Robert Price	03/2018
5856	26220^29021-29021^26220	128234	Frank Doornink	03/2024
5857	35489^4102+4102^35489	128222	Hans Havermann	04/2021
5858	34721^4926+4926^34721	128208	Hans Havermann	04/2021
5859	(305*10^128198+1)/9	128200	Robert Price	02/2020
5860	2^425808-459959	128181	Enzo Doria	06/2015
5861	30632^15291+15291^30632	128178	Hans Havermann	04/2021
5862	U(623603)	128177	Serge Batalov	07/2024
5863	35981^3648+3648^35981	128167	Hans Havermann	04/2021
5864	2^425627-113605	128127	Enzo Doria	08/2014
5865	(4*10^128109+119)/3	128110	Robert Price	12/2021
5866	(22*10^128094+53)/3	128095	Robert Price	07/2019
5867	(86*10^128086-221)/9	128087	Robert Price	09/2019
5868	18565^30002-30002^18565	128070	Norbert Schneider	01/2015
5869	(2^425287-9)/2737	128021	Lelio R Paula	05/2015
5870	(3*2^425233-1)/25	128007	Lelio R Paula	05/2014
5871	Phi(149401,10)/30037901719561	128003	Makoto Kamada	07/2022
5872	2^425205+4911	128000	Marek Hubal	02/2017
5873	29241^23836+23836^29241	127995	Hans Havermann	04/2021
5874	2^425118-113663	127974	Enzo Doria	08/2014
5875	(86*10^127967-329)/9	127968	Robert Price	01/2020
5876	2^425061+1869761	127957	Enzo Doria	05/2016
5877	746^44541+44541^746	127955	Norbert Schneider	07/2019
5878	30236^17043+17043^30236	127946	Hans Havermann	03/2021
5879	2^424938+212419	127920	Enzo Doria	08/2023
5880	2^424918-21141	127914	Enzo Doria	07/2013
5881	Phi(274823,-3)	127907	Henri Lifchitz	12/2025
5882	(62*10^127903+91)/9	127904	Robert Price	07/2021
5883	2^424864-29489	127897	Enzo Doria	08/2015
5884	30438^15893+15893^30438	127877	Hans Havermann	02/2021
5885	(97*10^127858-1)/3	127860	Serge Batalov	12/2014
5886	28929^26258+26258^28929	127845	Hans Havermann	03/2021
5887	30563^15220+15220^30563	127828	Hans Havermann	03/2021
5888	2^424632-2786639	127827	Enzo Doria	03/2016
5889	10^127821-700001	127821	Robert Price	08/2021
5890	2^424577-113755	127811	Enzo Doria	09/2014
5891	(7*2^424512-1)/3	127792	Lelio R Paula	05/2014
5892	(56*10^127752+691)/9	127753	Robert Price	05/2019
5893	11^122629-720	127705	Enzo Doria	11/2012
5894	22*10^127645+3	127647	Robert Price	01/2020
5895	28715^27844+27844^28715	127631	Hans Havermann	03/2021
5896	(56*10^127612+187)/9	127613	Robert Price	10/2021
5897	(5*36^81995+821)/7	127609	Eric Chen	01/2021
5898	4*10^127562-39	127563	Robert Price	09/2020
5899	32595^8186+8186^32595	127547	Hans Havermann	03/2021
5900	2^423696-21429	127546	Enzo Doria	07/2013
5901	2^423664-1864559	127536	Enzo Doria	03/2016
5902	37889^2322+2322^37889	127530	Hans Havermann	03/2021
5903	37668^2429+2429^37668	127523	Hans Havermann	03/2021
5904	3^267267-4	127519	Henri Lifchitz	10/2014
5905	fibonacci(610144)-2	127513	Jon Grantham	08/2023
5906	26253^28852-28852^26253	127503	Frank Doornink	03/2024
5907	(103*10^127491+17)/3	127493	Robert Price	08/2020
5908	29376^21869+21869^29376	127487	Hans Havermann	03/2021
5909	31186^12241+12241^31186	127483	Hans Havermann	02/2021
5910	(19^99689+5^99689)/24	127477	Robert Price	09/2013
5911	7239^33023-7238^33023	127459	Norbert Schneider	02/2026
5912	27069^28754-28754^27069	127452	Frank Doornink	01/2024
5913	(21*2^423372+1)/101	127447	Lelio R Paula	05/2014
5914	30594^14645+14645^30594	127446	Hans Havermann	03/2021
5915	2^423328-21537	127435	Enzo Doria	07/2013
5916	(67*10^127413-7)/3	127415	Robert Price	01/2020
5917	(5*34^83193+700233)/11	127408	Eric Chen	08/2023
5918	(2*10^127407+73)/3	127407	Robert Price	09/2020
5919	(2^423165-7)/25	127384	Lelio R Paula	05/2015
5920	(7726^32768+1)/13917994151414876602369	127379	Kellen Shenton	04/2021
5921	(4*10^127349+17)/3	127350	Tyler Busby	01/2023
5922	29512^20647+20647^29512	127341	Hans Havermann	03/2021
5923	2^422987-3001935	127332	Paul Bourdelais	07/2023
5924	(112*10^127324+17)/3	127326	Robert Price	03/2020
5926	29565^20252+20252^29565	127321	Hans Havermann	03/2021
5925	232^232^232+1831^1831	127321	Henri Lifchitz	03/2025
5927	fibonacci(609165)-3	127308	Jon Grantham	08/2023
5929	(F(5)^182099-F(4)^182099)/F(3)	127282	Wayne Halsdorf	08/2013
5928	(5^182099-3^182099)/2	127282	Kellen Shenton	05/2022
5930	(16*10^127259+197)/3	127260	Robert Price	04/2019
5931	(26*10^127240+61)/3	127241	Robert Price	10/2019
5932	(234483*27^88884-145)/26	127230	Curtis Bright	05/2015
5933	2^422515-114997	127190	Enzo Doria	06/2015
5934	5*10^127179-3	127180	Robert Price	07/2015
5935	31678^10343+10343^31678	127176	Hans Havermann	03/2021
5936	(44*10^127169-233)/9	127170	Robert Price	01/2019
5937	34947^4352+4352^34947	127162	Hans Havermann	03/2021
5938	6*10^127158+19	127159	Robert Price	11/2021
5939	30469^14902+14902^30469	127155	Hans Havermann	03/2021
5940	5*10^127153+77	127154	Robert Price	12/2018
5941	29941^17620+17620^29941	127130	Hans Havermann	02/2021
5942	31607^10516+10516^31607	127119	Hans Havermann	03/2021
5943	(19*10^127118-97)/3	127119	Robert Price	10/2021
5944	(29*10^127111+691)/9	127112	Robert Price	08/2021
5945	736^44335+44335^736	127104	Norbert Schneider	07/2019
5946	33040^7023+7023^33040	127090	Hans Havermann	03/2021
5947	(4*10^127081+167)/9	127081	Robert Price	03/2022
5948	29748^18661+18661^29748	127052	Hans Havermann	03/2021
5949	27905^28578-28578^27905	127049	Frank Doornink	03/2024
5950	-516776642557847117490*Bern(37960)/34256837217082767928421792453	127042	Thomas Ritschel	06/2017
5951	(78^67141-1)/77	127036	Paul Bourdelais	09/2017
5952	(14*10^127014-137)/3	127015	Robert Price	04/2021
5953	31436^10965+10965^31436	127002	Hans Havermann	03/2021
5954	28905^24758+24758^28905	127001	Hans Havermann	03/2021
5955	2^421860-113285	126993	Enzo Doria	07/2014
5956	(10^127030+7)/81234833/9230384921/6092460488946445358851	126991	Alfred Reich	07/2021
5957	(2^421827-7)/11	126982	Lelio R Paula	05/2015
5958	26268^28729-28729^26268	126966	Frank Doornink	03/2024
5959	11^121910-840	126957	Enzo Doria	12/2012
5960	(56*10^126935+187)/9	126936	Robert Price	10/2021
5961	28915^24538+24538^28915	126933	Hans Havermann	03/2021
5962	(29*10^126928-77)/3	126929	Robert Price	02/2020
5963	(259*10^126919-1)/3	126921	Robert Price	12/2020
5964	10^126919+204567	126920	Patrick De Geest	05/2021
5965	(2^421617+100280245065)	126920	Paul Bourdelais	05/2022
5966	10^126919-100001	126919	Robert Price	07/2020
5967	28340^28503+28503^28340	126907	Norbert Schneider	02/2021
5968	2^421534-3001935	126895	Paul Bourdelais	07/2023
5969	(71^68539+1)/72	126882	Paul Bourdelais	09/2017
5970	(5*10^126871-119)/3	126872	Robert Price	03/2018
5971	Phi(47471,561)	126871	Henri Lifchitz	12/2025
5972	331^50339-10004	126846	Enzo Doria	07/2012
5973	2^421363-2790757	126843	Enzo Doria	03/2016
5974	(106*10^126839-1)/3	126841	Serge Batalov	12/2014
5975	37938^2203+2203^37938	126828	Hans Havermann	03/2021
5976	(13*10^126819+77)/9	126820	Robert Price	07/2022
5977	(7*2^421243+1)/39	126807	Lelio R Paula	05/2014
5979	(14*10^126784-83)/3	126785	Robert Price	12/2018
5978	2^421169-3001935	126785	Paul Bourdelais	07/2023
5980	2^421161-286183	126783	Enzo Doria	06/2015
5981	26733^28628-28628^26733	126738	Frank Doornink	03/2024
5982	(106*10^126726+17)/3	126728	Robert Price	04/2021
5983	30718^13347+13347^30718	126724	Hans Havermann	03/2021
5984	2^420939-113935	126716	Enzo Doria	10/2014
5985	11*23^93048+356	126708	Eric Chen	08/2023
5986	177^56363-2	126703	Lelio R Paula	10/2017
5987	2^420741-113659	126656	Enzo Doria	08/2014
5988	2^420694-21	126642	Lelio R Paula	05/2017
5989	(13*10^126638+437)/9	126639	Robert Price	04/2018
5990	(167*10^126637-17)/3	126639	Robert Price	03/2020
5991	4*10^126625+87	126626	Robert Price	08/2018
5992	(31*2^420556+1)/7	126601	Lelio R Paula	05/2014
5993	7*10^126600-99	126601	Robert Price	06/2019
5994	U(655247)/250330563881/206066063082749	126596	Serge Batalov	07/2024
5995	2^420424-59189	126561	Enzo Doria	10/2015
5996	28717^25534+25534^28717	126560	Hans Havermann	03/2021
5997	(86*10^126542+103)/9	126543	Robert Price	12/2021
5998	(19*10^126517-7)/3	126518	Robert Price	12/2023
5999	2026^38261-2025^38261	126516	Henri Lifchitz	12/2025
6000	28922^23655+23655^28922	126503	Hans Havermann	03/2021

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Probable Primes Top 10000

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