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 ?
2501	56*10^195032-3	195034	Robert Price	03/2020
2502	11^187185-90	194934	Enzo Doria	09/2012
2503	2^647545-25	194931	Boyan Hu	12/2024
2504	2^647468+220141	194908	Enzo Doria	03/2024
2505	(86*10^194818-437)/9	194819	Robert Price	03/2021
2506	7^230492-230492^7	194789	Henri Lifchitz	07/2024
2507	2^647068+77281	194787	Enzo Doria	05/2016
2508	2*10^194716-93	194717	Robert Price	12/2021
2509	15^165559-14^165559	194713	Jean-Louis Charton	03/2011
2510	F(931517)	194676	Henri Lifchitz	09/2008
2511	4*10^194668+49	194669	Robert Price	01/2019
2512	2^646589+1179407	194643	Enzo Doria	06/2016
2513	2^646289-114621	194553	Enzo Doria	05/2015
2514	2^646236-39659	194537	Enzo Doria	09/2015
2515	(16*10^194536+53)/3	194537	Robert Price	03/2019
2516	2^646161-59833	194514	Enzo Doria	11/2015
2517	(17*10^194502+31)/3	194503	Robert Price	01/2019
2518	(19*10^194428+287)/9	194429	Robert Price	10/2021
2519	2*10^194413+3	194414	Robert Price	07/2015
2520	2^645360-1848599	194273	Enzo Doria	08/2015
2521	22470^44641+44641^22470	194260	Norbert Schneider	08/2023
2522	(112*10^194150-1)/3	194152	Serge Batalov	12/2014
2523	Phi(293127,10)	194041	Makoto Kamada	12/2023
2524	2*10^193981-43	193982	Robert Price	04/2018
2525	2^644382+75169	193979	Enzo Doria	04/2016
2526	2^644304-1861409	193955	Enzo Doria	11/2015
2527	(29*10^193950-23)/3	193951	Robert Price	03/2022
2528	5*10^193907-9	193908	Robert Price	05/2015
2529	2^644043+1876703	193877	Enzo Doria	07/2016
2530	2*10^193841-63	193842	Robert Price	01/2022
2531	2^643735+1879733	193784	Enzo Doria	09/2016
2532	(5^277183+1)/6	193742	Paul Bourdelais	07/2010
2533	9*10^193712+71	193713	Robert Price	08/2020
2534	2^643216-286565	193628	Enzo Doria	07/2015
2535	2^643204+215011	193624	Enzo Doria	11/2023
2536	10^193566+1126339	193567	Patrick De Geest	09/2022
2538	10^193566-10000000001	193566	Robert Price	04/2021
2537	10^193566-454041	193566	Patrick De Geest	08/2021
2540	2^642888-24965	193529	Enzo Doria	09/2013
2539	2^642889+25367	193529	Enzo Doria	11/2023
2541	2^642448-114825	193397	Enzo Doria	05/2015
2542	2^642437-1856623	193393	Enzo Doria	10/2015
2543	2^642039-59797	193273	Enzo Doria	11/2015
2544	2^641987+39	193258	Jon Grantham	08/2023
2545	10^193230+513861	193231	Patrick De Geest	07/2018
2546	10^193230-8001	193230	Robert Price	03/2018
2547	(62*10^193225-233)/9	193226	Robert Price	02/2022
2548	2^641692-286349	193169	Enzo Doria	07/2015
2549	2^641690-24737	193168	Enzo Doria	09/2013
2550	22268^44421+44421^22268	193129	Norbert Schneider	06/2023
2551	2^641514+1876549	193115	Enzo Doria	07/2016
2552	2^640888-2785619	192927	Enzo Doria	10/2015
2553	2^640874-2783741	192923	Enzo Doria	09/2015
2554	10^192922+192207	192923	Patrick De Geest	08/2021
2555	10^192922-7001	192922	Robert Price	04/2021
2556	2^640854+25	192917	Stefano Morozzi	05/2021
2557	34*10^192868-9	192870	Robert Price	06/2020
2558	(46*10^192841+683)/9	192842	Robert Price	03/2019
2559	2^640181+467	192714	Lelio R Paula	08/2013
2560	2^640072+27541	192681	Enzo Doria	01/2024
2561	(10^192700)/(192700^10)	192648	Henri Lifchitz	05/2025
2562	2^639536-1850249	192520	Enzo Doria	08/2015
2563	40714<>40712<>...<>1086421357911<>...<>40711<>40713	192464	Hans Havermann	12/2019
2564	5*10^192422-43	192423	Robert Price	01/2019
2565	2^639110-2792441	192392	Enzo Doria	02/2016
2566	(241^80761-1)/240	192372	Anonymous	04/2024
2567	2^638955-29827	192345	Enzo Doria	08/2015
2568	15^163539+14	192337	Alfred Reich	10/2023
2569	2^638713-2784223	192272	Enzo Doria	10/2015
2570	(10^192216+7)/149	192214	Alfred Reich	07/2021
2571	2^638490-113507	192205	Enzo Doria	08/2014
2572	2^638189-39943	192115	Enzo Doria	09/2015
2573	2^638110+1877119	192091	Enzo Doria	07/2016
2574	MillsLike(2,1,4,12,4,22,12,114,4,138,142,2956,6388,5248,17532,96930,83782,1464,897448,300832)+82440	192083	Sergey Batalov	05/2024
2575	MillsLike(2,1,4,12,4,22,12,114,4,138,142,2956,6388,5248,17532,96930,83782,1464,897448,300832)	192083	Sergey Batalov	05/2024
2576	2^638066-2785211	192078	Enzo Doria	10/2015
2577	(35*10^191973-341)/9	191974	Robert Price	08/2021
2578	(112*10^191900+17)/3	191902	Robert Price	03/2020
2579	2^637475-115309	191900	Enzo Doria	07/2015
2580	(68*10^191754-113)/9	191755	Robert Price	03/2021
2581	2^636930-11	191736	Stefano Morozzi	07/2022
2582	(47*10^191732+259)/9	191733	Robert Price	03/2022
2583	41459^41522-41522^41459	191733	Norbert Schneider	04/2025
2584	2^636661+1876577	191655	Enzo Doria	07/2016
2585	(9^200807-2^200807)/7	191618	Jon Grantham	07/2023
2586	(34^125101-1)/33	191589	Paul Bourdelais	11/2017
2587	fibonacci(916540)-2	191546	Jon Grantham	08/2023
2588	2^636177-1855123	191509	Enzo Doria	09/2015
2589	2^636158-113627	191503	Enzo Doria	08/2014
2590	(37*25^136966+63)/4	191472	Curtis Bright	05/2015
2591	2^636035+79823	191466	Enzo Doria	06/2016
2592	2^636011-1860847	191459	Enzo Doria	11/2015
2593	2^635926-1860611	191433	Enzo Doria	11/2015
2594	3*2^635755+5	191382	Jon Grantham	07/2023
2595	3*10^191152-7	191153	Robert Price	08/2015
2596	2^634883-1865677	191119	Enzo Doria	02/2016
2597	2^634801+1871957	191095	Enzo Doria	05/2016
2598	(77*10^191080+157)/9	191081	Robert Price	05/2022
2599	(35*10^191073+1)/9	191074	Serge Batalov	07/2010
2600	9*10^191018-41	191019	Robert Price	08/2020
2601	2^634470-59861	190995	Enzo Doria	11/2015
2602	2^634368-29519	190964	Enzo Doria	08/2015
2603	(19*10^190935+11)/3	190936	Robert Price	07/2023
2604	2^634188-350609	190910	Enzo Doria	06/2015
2605	(65*10^190899+493)/9	190900	Robert Price	08/2021
2606	(62*10^190795-413)/9	190796	Robert Price	09/2021
2607	(26*10^190789-131)/3	190790	Robert Price	10/2019
2608	(13*10^190732-61)/3	190733	Robert Price	11/2018
2609	3*2^633524+5	190711	Jon Grantham	07/2023
2610	(7*10^190683+143)/3	190684	Robert Price	03/2018
2611	2^633088-113879	190579	Enzo Doria	10/2014
2612	2^633064+1874911	190572	Enzo Doria	06/2016
2613	5*3^399402+2^399402	190564	Jon Grantham	08/2023
2614	(43*10^190547+83)/9	190548	Robert Price	11/2018
2615	99*10^190543+7	190545	Robert Price	05/2021
2616	(299*10^190533+1)/3	190535	Robert Price	04/2020
2617	(1744*10^190519-1747)/3	190522	Robert Price	12/2020
2618	2^632815-15	190497	Stefano Morozzi	07/2022
2619	2^632795-351205	190491	Enzo Doria	06/2015
2620	41171^41272+41272^41171	190454	Norbert Schneider	05/2023
2621	(16*10^190420-19)/3	190421	Robert Price	02/2019
2622	(43*10^190351+101)/9	190352	Robert Price	11/2018
2623	2^632156+78391	190298	Enzo Doria	06/2016
2624	97*10^190295-3	190297	Robert Price	05/2020
2625	2^632082-1851971	190276	Enzo Doria	08/2015
2626	2^632020+1880311	190257	Enzo Doria	09/2016
2627	(5*10^190242-77)/9	190242	Robert Price	04/2021
2628	7*10^190210+13	190211	Robert Price	03/2021
2629	2^631637-462373	190142	Enzo Doria	08/2015
2630	2*10^190126-21	190127	Robert Price	09/2020
2631	(28*10^190105+191)/3	190106	Robert Price	02/2020
2632	2*10^190093+33	190094	Robert Price	11/2021
2633	(68*10^190053-113)/9	190054	Robert Price	03/2021
2634	2^631183+213413	190006	Enzo Doria	09/2023
2635	2^631122-39251	189987	Enzo Doria	08/2015
2636	(26*10^189928-89)/9	189929	Robert Price	06/2018
2637	2^630839-97	189902	Yves Minet	07/2017
2638	99*10^189876-7	189878	Robert Price	07/2020
2639	41147^41147+30^30	189867	Henri Lifchitz	09/2024
2640	2^630359+1788953	189757	Enzo Doria	05/2016
2641	2^630228+1871971	189718	Enzo Doria	05/2016
2642	2^630108+781	189682	Lelio R Paula	08/2013
2643	2^629870-1867811	189610	Enzo Doria	04/2016
2644	(359^74189-1)/358	189558	Alexander Zhirkov	11/2017
2645	2^629326+2792929	189447	Enzo Doria	02/2016
2646	4*10^189401+13	189402	Robert Price	02/2021
2647	(10^189385-61)/3	189385	Serge Batalov	12/2014
2648	2^629036+1874011	189359	Enzo Doria	06/2016
2649	2^628930+80779	189327	Enzo Doria	07/2016
2650	(134*10^189309-11)/3	189311	Robert Price	01/2022
2651	9*10^189306-11	189307	Mischa Rodermond	04/2023
2652	3^396740-396740^3	189294	Henri Lifchitz	07/2024
2653	2^628582+1179439	189223	Enzo Doria	06/2016
2654	(44*10^188999-503)/9	189000	Robert Price	12/2018
2655	(16*10^188823+167)/3	188824	Robert Price	06/2019
2656	(10^188796+7)/4967/71933	188788	Alfred Reich	08/2021
2657	2^627037-2785843	188757	Enzo Doria	10/2015
2658	(10^188566+7)/311640753181661	188552	Alfred Reich	04/2022
2659	(16*10^188457+161)/3	188458	Robert Price	02/2019
2660	L(901657)	188436	Renaud Lifchitz	11/2008
2661	(19*10^188375+137)/3	188376	Robert Price	03/2022
2662	2^625651+74213	188340	Enzo Doria	04/2016
2663	2^625584-460919	188320	Enzo Doria	06/2015
2664	(8*10^188308-71)/9	188308	Serge Batalov	11/2022
2665	5^269399-3^269399-1	188302	Jon Grantham	08/2023
2666	(14*10^188218+139)/9	188219	Robert Price	11/2021
2667	40760^40821-40821^40760	188195	Norbert Schneider	07/2024
2668	(10^188164+359)/9	188164	Serge Batalov	12/2014
2669	2^624481-113611	187988	Enzo Doria	08/2014
2670	(2^624389+125582)/2	187960	Stefano Morozzi	09/2019
2671	(2^624389+166982)/2	187960	Stefano Morozzi	09/2019
2672	(2^624389+179886)/2	187960	Stefano Morozzi	09/2019
2673	(2^624387+64466)/2	187959	Stefano Morozzi	09/2019
2674	(2^624378+112990)/2	187957	Stefano Morozzi	09/2019
2675	(2^624380+161986)/2	187957	Stefano Morozzi	09/2019
2677	(2^624376+55762)/2	187956	Stefano Morozzi	09/2019
2676	(2^624377+169506)/2	187956	Stefano Morozzi	09/2019
2678	(2^624355+80178)/2	187950	Stefano Morozzi	09/2019
2679	(2^624351+61350)/2	187949	Stefano Morozzi	09/2019
2680	(2^624341+63462)/2	187946	Stefano Morozzi	09/2019
2681	(2^624344+135990)/2	187946	Stefano Morozzi	09/2019
2682	(2^624344+183898)/2	187946	Stefano Morozzi	09/2019
2684	(2^624340+126982)/2	187945	Stefano Morozzi	09/2019
2683	(2^624338+196110)/2	187945	Stefano Morozzi	09/2019
2685	(2^624337+105162)/2	187944	Stefano Morozzi	09/2019
2686	(2^624333+44594)/2	187943	Stefano Morozzi	09/2019
2687	(2^624321+88742)/2	187940	Stefano Morozzi	09/2019
2688	(2^624324+135178)/2	187940	Stefano Morozzi	09/2019
2689	(2^624317+14186)/2	187938	Stefano Morozzi	09/2019
2690	(2^624313+24450)/2	187937	Stefano Morozzi	09/2019
2691	(2^624309+184590)/2	187936	Stefano Morozzi	09/2019
2693	(2^624307+152658)/2	187935	Stefano Morozzi	09/2019
2692	(2^624307+185978)/2	187935	Stefano Morozzi	09/2019
2694	(2^624303+40814)/2	187934	Stefano Morozzi	09/2019
2695	(2^624304+99238)/2	187934	Stefano Morozzi	09/2019
2696	2^624077-112723	187866	Enzo Doria	07/2014
2697	2^624008+1874941	187846	Enzo Doria	06/2016
2698	2^623870+78679	187804	Enzo Doria	05/2016
2699	2^623714-114035	187757	Enzo Doria	11/2014
2700	2^623651-1834251	187738	Enzo Doria	07/2015
2701	(7*10^187645+53)/3	187646	Robert Price	05/2018
2702	21650^43269+43269^21650	187591	Norbert Schneider	02/2023
2703	2^623146+1879609	187586	Enzo Doria	09/2016
2704	(401*10^187512+13)/9	187514	Robert Price	09/2021
2705	(5*10^187471+91)/3	187472	Robert Price	04/2018
2706	2^622500+81931	187392	Enzo Doria	08/2016
2707	(13*10^187382-157)/9	187383	Robert Price	05/2021
2708	2^622300-1861739	187331	Enzo Doria	12/2015
2709	(22*10^187317-91)/3	187318	Robert Price	02/2022
2710	(38*10^187281+349)/9	187282	Robert Price	10/2018
2711	2^622052+76771	187257	Enzo Doria	05/2016
2712	2^622005-24091	187243	Enzo Doria	08/2013
2713	7*10^187205-57	187206	Robert Price	06/2020
2714	2^621879-351787	187205	Enzo Doria	07/2015
2715	(5*10^187168-53)/3	187169	Robert Price	09/2020
2716	(23*10^187164-143)/3	187165	Robert Price	12/2019
2717	2^621700+79411	187151	Enzo Doria	06/2016
2718	2^621597+39	187120	Jon Grantham	08/2023
2719	(7*10^187101+131)/3	187102	Robert Price	06/2020
2720	(2*10^187062-71)/3	187062	Robert Price	12/2017
2721	V(1118570)	187013	Serge Batalov	07/2024
2722	2^620929-113203	186919	Enzo Doria	07/2014
2723	10^186842+168223	186843	Patrick De Geest	07/2018
2724	10^186842-8001	186842	Robert Price	03/2018
2725	V(1117640)/13411681/26823361/575709775681/989889277441	186814	Serge Batalov	07/2024
2726	2^620347-1777	186744	Lelio R Paula	07/2013
2727	(11*10^186659+133)/9	186660	Robert Price	04/2022
2728	11^179143-4170	186559	Enzo Doria	12/2012
2729	(13^186535)%(10^186535)	186535	Henri Lifchitz	05/2025
2730	(5^266863+1)/6	186529	Paul Bourdelais	07/2010
2731	2*10^186517+33	186518	Robert Price	11/2021
2732	2^619297-2792353	186427	Enzo Doria	02/2016
2733	(49*10^186409+383)/9	186410	Robert Price	04/2019
2734	2^618940-460139	186320	Enzo Doria	06/2015
2735	2^618046+74179	186051	Enzo Doria	04/2016
2736	3*10^186019+11	186020	Robert Price	07/2018
2737	(16*10^185978-19)/3	185979	Robert Price	02/2019
2738	(22*10^185950-7)/3	185951	Robert Price	12/2022
2739	2*10^185930-3	185931	Robert Price	07/2015
2740	(82^97151+1)/83	185928	Paul Bourdelais	10/2017
2741	4*10^185905+91	185906	Robert Price	08/2018
2742	(34*10^185902-601)/9	185903	Robert Price	07/2022
2743	(19*10^185873+131)/3	185874	Robert Price	06/2020
2744	(37*10^185811+377)/9	185812	Robert Price	11/2018
2745	2^617250+9385	185811	Lelio R Paula	07/2013
2746	2^617130+9	185775	Stefano Morozzi	05/2021
2747	39^116749+2	185756	Robert Price	04/2015
2748	2^616924-39719	185713	Enzo Doria	09/2015
2749	2^616712+1867621	185649	Enzo Doria	04/2016
2750	(3^388897+2^388897)/5	185551	Jean-Louis Charton	09/2011

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