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 ?
3251	(2^399874+2194)/2	120374	Stefano Morozzi	09/2020
3252	2^399792-1849259	120350	Enzo Doria	08/2015
3253	9*10^120342-7	120343	Robert Price	09/2015
3254	(2^399751+786)/2	120337	Stefano Morozzi	09/2020
3255	(13*10^120306-37)/3	120307	Robert Price	01/2019
3256	(2^399604+3070)/2	120293	Stefano Morozzi	09/2020
3257	(2^399549+1062)/2	120276	Stefano Morozzi	09/2020
3258	2^399526-1861721	120270	Enzo Doria	11/2015
3259	(10^(260126+1)+3610^60126-1)/9	120253	Robert Price	10/2015
3260	32016^5687+5687^32016	120217	Hans Havermann	01/2021
3261	2^399322-2798111	120208	Enzo Doria	04/2016
3262	30438^8867+8867^30438	120163	Hans Havermann	02/2021
3264	72^64693-71^64693	120157	Robert Price	03/2014
3263	(17*10^120156-161)/9	120157	Robert Price	02/2021
3265	2^399111-28489	120145	Enzo Doria	08/2015
3266	(2^399014+1318)/2	120115	Stefano Morozzi	02/2021
3267	30254^9333+9333^30254	120110	Hans Havermann	02/2021
3268	30882^7745+7745^30882	120101	Hans Havermann	02/2021
3270	2^398877+105	120074	Donovan Johnson	01/2006
3269	(101*10^120072-87)/7	120074	Hans Havermann	02/2015
3271	(88^61751+1)/89	120072	Paul Bourdelais	09/2017
3272	2^398710+57	120024	Lelio R Paula	04/2013
3273	(2^398698+1138)/2	120020	Stefano Morozzi	09/2020
3274	2^398691-115057	120018	Enzo Doria	06/2015
3275	L(574219)	120005	Renaud Lifchitz	03/2004
3276	2^398571+60413	119982	Yves Minet	03/2011
3277	28623^15538+15538^28623	119971	Hans Havermann	02/2021
3278	p(24179)#/2-64	119949	Robert Price	04/2017
3279	2^398448+1872001	119945	Enzo Doria	05/2016
3280	634^42803+42803^634	119938	Norbert Schneider	07/2019
3281	31083^7220+7220^31083	119935	Hans Havermann	01/2021
3282	(68*10^119931-11)/3	119933	Robert Price	01/2020
3283	8*10^119930-3	119931	Ray Chandler	04/2011
3284	(2^398398+774)/2	119930	Stefano Morozzi	09/2020
3285	(10^119880+179)/9	119880	Serge Batalov	12/2014
3286	(9*2^398145+1)/73	119853	Lelio R Paula	04/2014
3287	(10^119836+77)/3	119836	Robert Price	01/2018
3288	28179^17870+17870^28179	119821	Hans Havermann	02/2021
3289	2^398029+1872527	119819	Enzo Doria	05/2016
3290	33142^4119+4119^33142	119802	Hans Havermann	01/2021
3291	2^397897-113541	119779	Enzo Doria	08/2014
3292	28636^15171+15171^28636	119728	Hans Havermann	02/2021
3293	(2^397696+1042)/2	119719	Stefano Morozzi	09/2020
3294	(19*10^119716+101)/3	119717	Robert Price	09/2019
3295	29563^11208+11208^29563	119717	Hans Havermann	02/2021
3296	(21*2^397661-1)/27593	119705	Lelio R Paula	04/2014
3297	28243^17308+17308^28243	119701	Hans Havermann	02/2021
3298	77*10^119688+3	119690	Robert Price	06/2020
3299	(2^397504+1698)/2	119661	Stefano Morozzi	09/2020
3300	(58^67853-1)/57	119653	Paul Bourdelais	09/2017
3301	2^397426+73849	119638	Enzo Doria	04/2016
3302	2^396933-112723	119489	Enzo Doria	06/2014
3303	11^114738-150	119488	Enzo Doria	10/2012
3304	(4*10^119474+149)/9	119474	Robert Price	04/2018
3305	2^396790-21	119446	Lelio R Paula	04/2013
3306	32061^5300+5300^32061	119405	Hans Havermann	01/2021
3307	(2^396633-7)/5	119398	Lelio R Paula	04/2014
3308	27382^22913+22913^27382	119388	Hans Havermann	03/2021
3309	(2^396577+2522)/2	119382	Stefano Morozzi	09/2020
3310	(2^396492+2230)/2	119356	Stefano Morozzi	01/2021
3311	105^59050+104	119352	Norbert Schneider	11/2016
3312	126^56824-125	119352	Norbert Schneider	12/2018
3313	139^55690-138	119345	Norbert Schneider	04/2019
3314	790^41179+41179^790	119322	Norbert Schneider	04/2019
3315	2^396374+73729	119321	Enzo Doria	04/2016
3316	88*10^119295+3	119297	Robert Price	05/2020
3317	2^396258-459491	119286	Enzo Doria	05/2015
3318	(2^396248+3126)/2	119283	Stefano Morozzi	09/2020
3319	2^396128-396128-1	119247	Karsten Bonath	06/2018
3320	(28*10^119206-67)/3	119207	Robert Price	10/2020
3321	(2^395986+5)/76881	119199	Lelio R Paula	04/2014
3322	11^114458+6	119196	Paul Bourdelais	02/2021
3323	(23*2^395942-1)/91	119190	Lelio R Paula	04/2014
3324	(2^395902+202)/2	119179	Stefano Morozzi	09/2020
3325	(2^395825+582)/2	119155	Stefano Morozzi	09/2020
3326	(2^395733+1130)/2	119128	Stefano Morozzi	09/2020
3327	29548^10725+10725^29548	119091	Hans Havermann	02/2021
3328	(11*2^395548+1)/3	119073	Lelio R Paula	04/2014
3329	(30^80599+1)/31	119054	Robert Price	07/2013
3330	(232*10^119047+17)/3	119049	Robert Price	04/2021
3331	(43*10^119024-403)/9	119025	Robert Price	01/2019
3332	6*10^118964+43	118965	Robert Price	07/2020
3333	(8*10^118960+49)/3	118961	Robert Price	05/2020
3334	31253^6402+6402^31253	118959	Hans Havermann	02/2021
3335	(194*10^118925-17)/3	118927	Robert Price	09/2020
3336	2^395062-109121	118926	Enzo Doria	04/2014
3337	2^395055-4627	118924	Yves Minet	05/2019
3338	(2^395054+702)/2	118923	Stefano Morozzi	09/2020
3339	(2^395011+2526)/2	118910	Stefano Morozzi	09/2020
3340	(2^394918+78557)/3	118882	Lelio R Paula	01/2015
3341	(2^394858+1018)/2	118864	Stefano Morozzi	09/2020
3342	(16*10^118852+77)/3	118853	Robert Price	03/2019
3343	(2^394739+3)/1883	118826	Lelio R Paula	04/2014
3344	10^118772+163599	118773	Patrick De Geest	02/2021
3346	10^118772-40000000001	118772	Robert Price	09/2020
3345	10^118772-207603	118772	Patrick De Geest	02/2021
3347	26842^26577+26577^26842	118763	Hans Havermann	02/2021
3348	(2^394513+2034)/2	118760	Stefano Morozzi	09/2020
3349	(2^394473+2774)/2	118748	Stefano Morozzi	02/2021
3350	27949^17710+17710^27949	118734	Hans Havermann	02/2021
3351	2^394266+71389	118686	Enzo Doria	04/2016
3352	2^394215-51261	118671	Tony Prest / Never Odd Or Even	04/2018
3353	(2^394215-48793)/5/5	118670	Tony Prest / Never Odd Or Even	04/2018
3354	(2^394215-17063)/3/3/5	118669	Tony Prest / Never Odd Or Even	04/2018
3355	(2^394215-24393)/5/5/5/5/5	118668	Tony Prest / Never Odd Or Even	04/2018
3356	(2^394215-35885)/3/71/173	118666	Tony Prest / Never Odd Or Even	04/2018
3357	(2^394215-47925)/353/2269	118665	Tony Prest / Never Odd Or Even	04/2018
3358	29201^11568+11568^29201	118652	Hans Havermann	02/2021
3359	(2^394215-62819)/3/3/3/3/3/3/3/7/21737/1082153/1953673	118650	Tony Prest / Never Odd Or Even	04/2018
3360	(2^394131+2214)/2	118645	Stefano Morozzi	09/2020
3361	(17*10^118635+13)/3	118636	Robert Price	01/2019
3362	5^169727+2	118635	Lelio R Paula	08/2013
3363	2^394034-3	118617	M. Frind & P. Underwood	09/2002
3364	(7*10^118607+179)/3	118608	Robert Price	09/2018
3365	3^248572-6242	118599	Enzo Doria	05/2014
3366	(3*2^393964-1)/181	118594	Lelio R Paula	04/2014
3367	7^140303-6	118570	Robert Price	11/2014
3368	(2^393864+2686)/2	118565	Stefano Morozzi	09/2020
3369	(2^393862+3150)/2	118564	Stefano Morozzi	09/2020
3370	(2^393849+3762)/2	118561	Stefano Morozzi	01/2021
3371	(2^393661+2666)/2	118504	Stefano Morozzi	09/2020
3372	(2^393650+1614)/2	118501	Stefano Morozzi	09/2020
3373	27655^19264+19264^27655	118495	Hans Havermann	02/2021
3374	10^118485-50001	118485	Robert Price	08/2020
3375	(2^393528+1030)/2	118464	Stefano Morozzi	09/2020
3376	2^393427+75683	118434	Enzo Doria	04/2016
3377	2^393376-114749	118418	Enzo Doria	04/2015
3378	30960^6671+6671^30960	118397	Hans Havermann	02/2021
3379	(2^393234+2010)/2	118375	Stefano Morozzi	09/2020
3380	(2^393205+3030)/2	118367	Stefano Morozzi	09/2020
3381	(2^393191+2174)/2	118362	Stefano Morozzi	09/2020
3382	2^393180+73	118359	Lelio R Paula	04/2013
3383	27546^19771+19771^27546	118339	Hans Havermann	02/2021
3384	p(23881)#/2+256	118328	Robert Price	05/2017
3385	(10^118324+359)/9	118324	Serge Batalov	12/2014
3386	(2^393048+570)/2	118319	Stefano Morozzi	09/2020
3387	p(23879)#/2+64	118317	Robert Price	03/2017
3388	(238*10^118265-1)/3	118267	Robert Price	04/2020
3390	(53*10^118216+1)/9	118217	Serge Batalov	11/2010
3389	(2^392707+1710)/2	118217	Stefano Morozzi	09/2020
3391	(7*2^392697+1)/15	118214	Renaud Lifchitz	03/2011
3392	(157^53819-1)/156	118179	Alexander Zhirkov	06/2016
3393	(2^392567+2750)/2	118175	Stefano Morozzi	01/2021
3394	(19*2^392551+1)/3	118171	Lelio R Paula	04/2014
3395	27185^22222+22222^27185	118168	Hans Havermann	01/2021
3396	2^392516-29219	118160	Enzo Doria	07/2015
3397	66*10^118155+7	118157	Robert Price	07/2020
3398	Phi(177231,10)	118152	Maksym Voznyy	09/2015
3399	2^392413-112123	118129	Enzo Doria	06/2014
3400	27491^19798+19798^27491	118119	Hans Havermann	02/2021
3401	(2^392342+5)/27	118106	Lelio R Paula	04/2014
3402	(2^392333+1782)/2	118104	Stefano Morozzi	01/2021
3403	2^392300-1841429	118095	Enzo Doria	06/2015
3404	2^392220+75241	118070	Enzo Doria	04/2016
3405	27836^17409+17409^27836	118047	Hans Havermann	02/2021
3406	10^118009+664447	118010	Patrick De Geest	07/2018
3407	10^118009-20001	118009	Robert Price	01/2018
3408	(14*10^117991+61)/3	117992	Robert Price	12/2018
3409	2^391933+5897	117984	Yves Minet	02/2011
3410	2^391912-1849259	117978	Enzo Doria	08/2015
3411	28357^14440+14440^28357	117953	Hans Havermann	02/2021
3412	(2^391812+5)/14181	117944	Lelio R Paula	04/2014
3413	(7*10^117930-79)/9	117930	Robert Price	01/2021
3414	27531^19168+19168^27531	117904	Hans Havermann	02/2021
3415	(46*10^117902+683)/9	117903	Robert Price	03/2019
3416	27670^18189+18189^27670	117869	Hans Havermann	02/2021
3417	(7*2^391521+1)/285	117858	Lelio R Paula	04/2014
3418	32169^4606+4606^32169	117846	Hans Havermann	02/2021
3419	2^391324+90901	117801	Yves Minet	02/2011
3420	2^391301-1859923	117794	Enzo Doria	03/2016
3421	2^391261-4131	117782	Yves Minet	02/2018
3422	(2^391211+554)/2	117766	Stefano Morozzi	09/2020
3423	38434^1157+1157^38434	117737	Hans Havermann	01/2021
3424	(2^391115-7)/11791	117734	Lelio R Paula	04/2014
3425	(85*10^117719+473)/9	117720	Robert Price	01/2020
3426	(2^391049+582)/2	117718	Stefano Morozzi	09/2020
3427	31083^6122+6122^31083	117709	Hans Havermann	02/2021
3428	2^390960+1880881	117691	Enzo Doria	11/2016
3429	2^390897-1860553	117672	Enzo Doria	11/2015
3430	2^390889-115003	117670	Enzo Doria	06/2015
3431	2^390779-30337	117637	Paul Bourdelais	02/2012
3432	(2^390735+378)/2	117623	Stefano Morozzi	02/2021
3433	11^112916-780	117590	Enzo Doria	12/2012
3434	27641^17916+17916^27641	117564	Hans Havermann	02/2021
3435	27906^16321+16321^27906	117561	Hans Havermann	02/2021
3436	27294^20275+20275^27294	117555	Hans Havermann	02/2021
3437	(2^390473+1002)/2	117544	Stefano Morozzi	09/2020
3438	35912^1875+1875^35912	117541	Hans Havermann	02/2021
3439	(16^97613-5^97613)/11	117537	Robert Price	07/2013
3440	(2^390438+1774)/2	117534	Stefano Morozzi	01/2021
3441	(2^390418+1722)/2	117528	Stefano Morozzi	09/2020
3442	(2^390403+654)/2	117523	Stefano Morozzi	09/2020
3443	(2^390343+2246)/2	117505	Stefano Morozzi	01/2021
3444	28043^15478+15478^28043	117493	Hans Havermann	02/2021
3445	(17*2^390272+1)/1983	117482	Lelio R Paula	04/2014
3446	37077^1474+1474^37077	117479	Hans Havermann	01/2021
3447	31^78759-30	117459	Theodore Burton	02/2007
3448	(2^390176+1222)/2	117455	Stefano Morozzi	09/2020
3449	(2^390133+1242)/2	117442	Stefano Morozzi	09/2020
3450	(2^390013+2634)/2	117406	Stefano Morozzi	09/2020
3451	3*10^117402+61	117403	Robert Price	09/2020
3452	2^389998+37	117402	Lelio R Paula	03/2013
3453	(2^389977+314)/2	117395	Stefano Morozzi	09/2020
3454	(2^389921+342)/2	117378	Stefano Morozzi	01/2021
3455	71830^43+43^71830	117333	Hans Havermann	01/2021
3456	(2^389768+1582)/2	117332	Stefano Morozzi	09/2020
3457	33802^2951+2951^33802	117292	Hans Havermann	02/2021
3458	26789^23866+23866^26789	117277	Hans Havermann	02/2021
3459	29^80192-1*80192^29	117273	Dylan Delgado	12/2019
3460	(13*10^117249+161)/3	117250	Robert Price	11/2018
3461	2^389478+43	117245	Lelio R Paula	03/2013
3462	(298*10^117229-7)/3	117231	Robert Price	06/2020
3463	(2^389416+342)/2	117226	Stefano Morozzi	01/2021
3464	(29*2^389351-1)/9	117207	Lelio R Paula	04/2014
3465	5*10^117205+23	117206	Robert Price	03/2019
3466	(2^389341-7)/3865	117200	Lelio R Paula	03/2014
3467	27272^19827+19827^27272	117195	Hans Havermann	01/2021
3468	(2^389276+2650)/2	117184	Stefano Morozzi	09/2020
3469	10^117142+209223	117143	Patrick De Geest	04/2018
3471	10^117142-1000000001	117142	Robert Price	03/2018
3470	10^117142-966057	117142	Patrick De Geest	04/2018
3472	10^117135+360577	117136	Patrick De Geest	07/2018
3473	10^117135-401	117135	Robert Price	01/2018
3474	4*10^117123+79	117124	Robert Price	08/2018
3475	2^389033-12797413	117111	Enzo Doria	04/2016
3476	(2^388987+2634)/2	117097	Stefano Morozzi	09/2020
3477	2^388960-109505	117089	Enzo Doria	04/2014
3478	7*10^117082-57	117083	Robert Price	06/2020
3479	(2^388928-5)/569	117077	Lelio R Paula	03/2014
3480	2^388888-1529	117067	Yves Minet	01/2013
3481	10^117059+28879	117060	Patrick De Geest	05/2016
3482	(10^117059-71)/1	117059	Serge Batalov	12/2014
3483	(2^388854+3630)/2	117057	Stefano Morozzi	09/2020
3484	(2^388842+2098)/2	117053	Stefano Morozzi	09/2020
3485	(2^388789+3150)/2	117037	Stefano Morozzi	09/2020
3486	(2^388748+378)/2	117025	Stefano Morozzi	02/2021
3487	(693^41189-1)/692	117005	Michael Stocker	05/2020
3488	(26*10^116999-503)/9	117000	Robert Price	07/2018
3489	(2^388609+1554)/2	116983	Stefano Morozzi	09/2020
3490	38496^1093+1093^38496	116975	Hans Havermann	02/2021
3491	3^245154-6256	116969	Enzo Doria	05/2014
3492	5*10^116966-43	116967	Robert Price	01/2019
3493	2^388536-113495	116961	Enzo Doria	08/2014
3494	(2^388512+382)/2	116954	Stefano Morozzi	02/2021
3495	2^388469-43	116941	Lelio R Paula	03/2013
3496	27417^18416+18416^27417	116939	Hans Havermann	02/2021
3497	(2^388438+1842)/2	116932	Stefano Morozzi	02/2021
3498	(7*2^388372-1)/111	116911	Lelio R Paula	04/2014
3499	(7*2^388335-1)/25	116900	Lelio R Paula	04/2014
3500	2^388180+93	116854	Donovan Johnson	07/2008

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