Great Internet Mersenne Prime Search (GIMPS)

Prime95, also distributed as a command-line utility mprime under FreeBSD and Linux, is a freeware application written by George Woltman. It is used by Great Internet Mersenne Prime Search (GIMPS), a distributed computing project dedicated to Mersenne prime hunting. In overclocking circles, its also commonly used for stability testing.

This repo is a mirror to Free Mersenne Prime Search Software source code for Windows, Linux, FreeBSD, and Mac OS X.

You could download the latest code from GIMPS or release page.

Mirror rank from PrimeNet Top Overall Teams

Top producers for the last year.
This hourly report generated 2026-02-20 12:00 UTC

Rank	Team Name	Total GHz Days	90 day	30 day	7 day	1 day	TF	P-1	LL/PRP	DC	ECM	ECM-F
1	GIMPS.Russia	976015128					0.3		0.1		99.6
2	Slovakia	766359623	⬆ 1				0.1	97.8			2.0
3	POLAND	476434614	⬆ 1	⬆ 1			0.2	99.1	0.1		0.5
4	PrimeNet	338064472	⬇ 2	⬇ 1			0.1	97.4	0.3	0.4	1.9
5	-Too many Ones-	189696198					0.3	92.2			7.5
6	Ars Technica Team Prime Rib	47620803		⬆ 1				97.7	0.1	1.8	0.3
7	unRAID	33479723		⬇ 1				99.6	0.4
8	GIMPSChina	22506019					77.5	15.8	4.0	0.7	1.9
9	One Man Team	16978088						99.5	0.5
10	More Power!!!	14607847					13.8	56.4	1.8	0.8	27.3
11	GW's legions	12736483					0.1	0.9	30.1	0.8	68.1
12	UCM-curtisc	11886596	⬆ 1	⬆ 1					99.3	0.7
13	Team-Deutschland	11602703	⬇ 1	⬇ 1			3.9	6.2	0.5	0.1	89.2
14	TeamUK	7436683					40.0	5.5	18.7	1.3	34.4	0.1
15	szerverem.hu	7293573	⬆ 222				5.8	36.9	45.9	5.1	6.2
16	Porta Kruse	6436616	⬆ 20				2.0	0.2		0.1	91.6	6.1
17	GPU to 72	4672062	⬇ 2				58.8	23.6	0.5	3.9	13.1
18	SpongeBob SquarePants	3499270	⬇ 2				0.1	29.9	58.4	10.2	1.3
19	Numberphile	2926366	⬇ 1				29.9	40.9	21.4	6.5	1.0
20	tsc	2243094	⬇ 1	⬆ 1			89.7	6.1	1.7	0.2	2.3
21	UKRAINE	2131401	⬇ 1	⬆ 1	⬆ 1		32.6	13.4	38.9	15.0
22	Dutch Power Cows	2064899	⬇ 5	⬇ 2	⬇ 1		33.4	28.1	1.3	1.3	35.9
23	Wikipedia	1967455	⬆ 1				58.8	33.9	4.0	2.3	0.8
24	Swedes Of Primes	1495380	⬇ 2				0.4	82.9	14.3	2.5
25	GIMPS.USA	1385100	⬇ 2				4.3	0.2	3.5	1.7	90.2
26	GIMPS.Japan	1346687	⬇ 5				4.5	0.1	8.1	2.0	85.3
27	GIMPS.Occitania	1341638	⬇ 2					2.5				97.5
28	UW Eau Claire	733339	⬆ 165	⬆ 25	⬆ 6	⬆ 1	77.2		17.2	5.6
29	MOXA	699650	⬇ 3	⬇ 1	⬇ 1	⬇ 1	98.9		0.8	0.3
30	MATHSareREAL	663480	⬇ 3	⬇ 1	⬇ 1		95.4		3.4	1.2
31	MBAi.Cloud	654273	⬇ 2	⬇ 1	⬇ 1				100.0
32	GIMPS.Korea	580598	⬆ 26	⬆ 2	⬇ 1		88.0	4.5	6.6	0.8	0.1
33	Rechenkraft.net	478580	⬇ 5	⬇ 2	⬇ 1		4.6	59.3	2.9	5.9	26.7	0.5
34	Terry Kim Team	474610	⬇ 3	⬇ 1	⬇ 1		98.3		0.8	0.4
35	citizenscience.ru	436801	⬇ 5	⬇ 3			83.4	7.2	4.2	0.9	3.7	0.7
36	Buhr	421997	⬇ 2	⬇ 1			62.2	2.9	20.0	6.2	8.8
37	S485122	310587	⬇ 4					95.0		5.0
38	Smoke-it	282162	⬇ 6	⬇ 2			90.9	6.7	1.7
39	YahsTeam	227156	⬆ 2	⬇ 1			88.2		9.9	1.9
40	nranks	211275	⬆ 5	⬆ 6	⬆ 5		33.2	0.6	3.3	0.4	62.5
41	GIMPS Team Philippines	209391	⬆ 1	⬆ 2	⬆ 1		79.8		2.4	1.7	15.1
42	NerdyGirls	206621	⬆ 5	⬇ 3	⬇ 2	⬆ 1	2.1	41.5	7.8	48.5
43	Canada	205505	⬇ 4	⬇ 2	⬇ 2	⬇ 1		3.1	67.2	28.6
44	randomteam	199631	⬇ 1		⬇ 1						100.0
45	Team Tartan	193308	⬇ 5	⬇ 3	⬇ 1				76.6	23.4
46	GIMPS China	175703	⬇ 11	⬇ 6			94.4		2.4	0.4	2.7
47	404 - "Primes not Found"	168614	⬆ 25	⬆ 9	⬆ 1		72.6		27.4
48	BitMEX Research	153552	⬇ 10	⬇ 3	⬇ 1				95.6	4.4
49	OverclockerAustralia	147192	⬇ 1	⬇ 2			59.7		21.2	15.6
50	Colorado School of Mines	142620	⬆ 67	⬆ 10			88.3		8.8	2.9
51	Team China	125190	⬆ 2	⬇ 3					99.7	0.3
52	GIMPS.NZ	120317	⬇ 3	⬇ 3			79.1		9.7	11.2
53	SASAKI	114627	⬇ 1	⬇ 2			100.0
54	EgyptianPolymaths	114023	⬆ 1		⬆ 2	⬆ 1		34.6			60.6
55	Unicamp	113656	⬆ 6	⬆ 2		⬇ 1	73.2	0.3	21.5	5.0
56	Cap'n Entropy's Cavalcade of Wonderment	111783	⬇ 6	⬇ 6	⬇ 2		75.2	5.1	17.5	2.2
57	Wisconsin	108316	⬇ 6	⬇ 5			51.9		25.7	22.4
58	Hungary	93675	⬇ 2		⬆ 1		0.5		2.0	3.0	94.3
59	GIMPS.France	91118	⬆ 11	⬆ 4	⬆ 1		12.2	48.8	5.2	18.3	15.2
60	SHADO	84753		⬆ 1	⬆ 1				63.5	17.7	11.0	2.2
61	Georgia Tech	80637	⬇ 24	⬇ 6	⬇ 3		92.9		7.1
62	Net-Work	77236					2.2	2.4			87.0
63	UIUC	76780	⬆ 5	⬆ 4					69.8	30.2
64	Eratosthenes Sieve	75261	⬆ 1	⬆ 2			0.7		98.5	0.7
65	Esperanto	70730	⬇ 2					24.7	14.4	60.8	0.2
66	AMD Users	63612	⬆ 5	⬆ 6	⬆ 4		73.3		13.6	13.0
67	Team Israel	62609	⬇ 1	⬆ 3	⬆ 2		97.1		1.3	1.6
68	GIMPS.NEO	61817	⬇ 1	⬆ 1					76.4	23.5
69	AJ	59400	⬆ 8	⬆ 5	⬆ 3	⬆ 2			76.5	23.5
70	LTT fans	59116	⬇ 11	⬇ 6	⬇ 4	⬇ 1	43.8		9.1	1.8	45.4
71	ParadoxZ Commando	57994	⬆ 2		⬆ 3	⬇ 1			72.4	27.6
72	Team Finland	57393	⬇ 26	⬇ 13	⬇ 5		76.0	0.5	23.1		0.5
73	Brno University of Technology	57019	⬇ 16	⬇ 5	⬇ 2			23.9	61.8	14.2
74	Team_Italia	56881	⬆ 4	⬇ 1	⬇ 1		2.7		67.9	22.3	2.2	4.2
75	Team Belgium	56093	⬇ 6				1.3	7.3	35.4	14.4	41.6
76	S147127	52950					23.5		10.8	65.7
77	Wile E. Coyote	50698	⬆ 2	⬆ 1	⬆ 1				79.2	4.1	16.7
78	ComputerraRU	49358	⬇ 14	⬇ 1	⬇ 1		15.9		74.5	9.5
79	Team Viet Nam	44241	⬇ 25				27.6		30.1	31.8	10.5
80	Team Austria	41864	⬇ 5				98.8			1.2
81	LimePrime	35488	⬇ 1	⬆ 1				7.3	87.5	5.1
82	Team H	35315		⬆ 1			10.4	1.0	88.1	0.5
83	Hermessz	35208		⬆ 2	⬆ 1		62.5		37.5
84	MES-Team	34815	⬇ 10	⬇ 3	⬇ 1		71.4	7.7		20.9
85	HardOCP	33166	⬆ 4	⬆ 1	⬆ 3	⬆ 1			79.1	20.9
86	socal_prime	33089	⬇ 5	⬇ 2	⬇ 1	⬇ 1		0.9	64.5	34.4	0.1
87	huskers-gimps	33082	⬆ 10		⬇ 1				72.7	27.3
88	Debian	32451	⬆ 3		⬇ 1				98.3	1.7
89	Small-Team-2000	30039	⬇ 4						10.4	89.6
90	IOTA	25849	⬆ 147	⬆ 145	⬆ 5		97.9			2.1
91	Costa Rica	24624	⬇ 1		⬇ 1				75.8	23.9
92	Turku	24285	⬆ 17	⬆ 25	⬆ 1				100.0
93	á•™(⇀‸↼‶)á•—	23234	⬆ 40	⬆ 1	⬇ 2		0.8		98.8	0.4
94	Channel 4	21929	⬆ 26	⬆ 10	⬇ 2				83.0	17.0
95	The Fellowship of Infinity	21047	⬆ 18	⬆ 4	⬆ 1	⬆ 1			99.5	0.5
96	Team Retired	20385	⬇ 2	⬇ 3	⬇ 2	⬇ 1			26.9	10.4
97	PrimitiveRootsCircle	19507	⬆ 4	⬇ 1			29.6		44.3	23.6	2.5
98	NanJing Tech	19501	⬆ 139						100.0
99	A Single Engineer	19199	⬇ 1	⬇ 2					72.3	27.7
100	SpartaAlumni	17881	⬇ 5	⬆ 1					71.1	28.9
101	MurrayInfoSys	17721	⬆ 15	⬆ 7	⬆ 1	⬆ 1			66.5	33.5
102	MadPoo	17697	⬇ 58	⬇ 12	⬆ 1	⬆ 1		26.6		73.4
103	Portland State University	17501	⬇ 17	⬇ 8	⬆ 2	⬆ 1	23.2	26.6	36.3	13.8
104	Team Norway	17159	⬇ 8	⬇ 12		⬆ 1	80.8			4.4	14.6
105	Quantus	16941	⬇ 17	⬇ 5	⬇ 4	⬇ 4	7.7		27.4	27.6		37.3
106	VIPR	16860	⬆ 8	⬆ 12	⬆ 2		37.3		42.0	20.7
107	Nerdfighters for Mersenne Primes	16053	⬇ 2	⬇ 2			2.9		81.9	15.2
108	Ozzie Prime	15608	⬇ 15	⬇ 6	⬇ 2			5.4	59.0	14.1		21.4
109	GIMPS.Portugal	14549	⬇ 5		⬆ 1		0.1	71.9		28.0
110	SETI.Germany	14419	⬆ 1	⬆ 5	⬆ 5	⬆ 1		6.6	22.0	71.4
111	Spain	14417	⬇ 27	⬇ 4		⬇ 1			65.0	35.0
112	Team Slovenia	13928	⬇ 25	⬇ 9	⬇ 3				72.3	27.7
113	moeses	13334	⬇ 6	⬇ 2	⬆ 3				99.2	0.8
114	GIMPS.Taiwan	12908	⬇ 14	⬇ 8	⬇ 1				85.8	13.8	0.1
115	Politeknik Banting, Selangor	12559	⬇ 23	⬇ 5	⬇ 3		81.3		6.3	12.4
116	Hyperion	12291	⬇ 8	⬇ 3	⬇ 2				2.1	28.8
117	NUST	12234	⬆ 96	⬆ 12	⬆ 1		9.8	86.8		3.5
118	Granada	12054	⬇ 12	⬇ 6	⬆ 1		34.6		6.4	58.4
119	Mensa	11954	⬇ 4		⬇ 2				78.9	21.1
120	Abacus	11125	⬆ 2	⬆ 4					92.6	7.4
121	FREE ROBUX	10852	⬆ 116	⬇ 1					100.0
122	Royal Military College of Canada	10691	⬇ 1		⬆ 1		89.7		7.9	2.4
123	MES22-Team	10564	⬇ 24	⬇ 9	⬆ 1		100.0
124	FreeBSD	9831	⬇ 21	⬇ 1	⬆ 3		0.5		84.9	14.7
125	youngfun429	9451	⬇ 23	⬇ 9	⬇ 3				65.6	34.4
126	Syntony	9448		⬆ 2						100.0
127	JiBoTeam	9370	⬆ 4		⬆ 1					100.0
128	Die Zeitfinder	9240	⬇ 18	⬇ 7	⬇ 3				100.0
129	Shaffer's Studio	8936	⬇ 4	⬇ 3					86.5	13.4
130	Triangle	8839	⬇ 7						96.2	3.8
131	Server66	8528	⬇ 3	⬆ 1			100.0
132	Aiblspitz	8503	⬆ 4	⬆ 2			1.9	62.4	18.6	15.2	2.0
133	Com Systems (RU)	8480	⬆ 27	⬆ 5	⬆ 2				64.2	35.8
134	Furry Primes	8022	⬇ 2	⬇ 1	⬇ 1		58.8		27.1	14.1
135	TurkishMath	7792	⬇ 11	⬇ 4	⬇ 1				90.2	9.8
136	irowiki	7744	⬇ 9	⬇ 1						100.0
137	Prime Rib	7650	⬇ 25	⬆ 3	⬆ 1	⬆ 4			97.3	2.7
138	Team Splunk	7605	⬇ 3	⬇ 2	⬇ 1	⬇ 1		28.1	71.9
139	RobotechResearch	7322	⬆ 40	⬆ 45	⬆ 20	⬇ 1			43.6	56.4
140	University of Waterloo	7044	⬆ 4	⬆ 2	⬆ 3	⬇ 1			100.0
141	Brasil	7030	⬇ 7	⬇ 4	⬇ 1	⬇ 1			77.7	22.2
142	SU Prime Pirates	6437	⬇ 2	⬇ 1	⬇ 1				61.5	38.5
143	GIMPS Romania	6325	⬆ 2	⬆ 2	⬇ 1				100.0
144	WSU Cougars	6279	⬇ 6	⬇ 5	⬇ 5				61.9	38.0
145	Elisabeth-von-Thadden-Schule	6009	⬆ 2	⬇ 2					38.6	61.4
146	Team Christensen	5862	⬇ 4	⬇ 2	⬇ 2					100.0
147	The_Dude_Abides	5218	⬇ 10	⬆ 1	⬇ 1		37.2			51.0
148	nmbarek_team	4960	⬇ 29	⬇ 23	⬇ 1				99.6	0.4
149	zeit	4944	⬇ 10		⬆ 1		2.2			97.8
150	Hong Kong GIMP	4905	⬆ 8	⬆ 3	⬇ 2				63.6	36.4
151	teamMALI	4901	⬇ 2	⬇ 1	⬇ 2				79.3	20.6
152	Danpi for GIMPS	4710	⬇ 2	⬇ 1	⬇ 1		100.0
153	Olympic College	4423	⬆ 1	⬆ 5	⬆ 1					100.0
154	Kabylie	4126	⬇ 1	⬆ 2	⬆ 1		15.6	4.2	37.7	42.5
155	3DCenter.org	3956	⬇ 12	⬇ 3	⬆ 1						100.0
156	International School of Beijing (ISB)	3851	⬇ 15	⬇ 10	⬆ 1				99.6	0.4
157	FactorMania	3357	⬆ 74	⬆ 9	⬆ 4	⬆ 1		60.2			39.8
158	Crunching@EVGA	3311	⬆ 79	⬆ 25	⬆ 4	⬆ 1			99.6	0.4
159	GIMPS.Hong Kong	3272	⬇ 2	⬇ 2	⬆ 4	⬆ 2	3.9		47.1	49.0
160	Noam Karni Team	3156	⬆ 30	⬆ 10	⬆ 10	⬆ 3			75.1	24.9
161	México mágico	3143	⬆ 24	⬆ 4	⬆ 4	⬆ 3			75.4	24.6
162	Team_Brazil	2999	⬆ 2	⬆ 1	⬆ 4	⬆ 3	83.1	0.2		16.7
163	Phi Kappa Theta	2820	⬆ 4	⬇ 3	⬇ 5	⬇ 6			56.0	44.0
164	TunisianTeam	2513	⬇ 9	⬇ 3	⬇ 4	⬆ 2			30.8	69.2
165	I Love Canadian Natural Resources	2507	⬇ 6	⬇ 1	⬆ 2	⬆ 2				100.0
166	Pi Rho	2498	⬆ 71	⬆ 48	⬆ 2	⬆ 2			67.2	32.8
167	The Prime Pioneers	2437	⬆ 30	⬆ 9	⬆ 2	⬆ 2	0.9	88.2		10.4	0.3
168	GIMPSMalaysia	2394	⬆ 47	⬆ 6	⬆ 7	⬆ 2			66.8	33.2
169	VRS_SE	2359	⬆ 2	⬆ 2	⬆ 2	⬆ 2			66.8	33.2
170	Korea.Prime	2331	⬆ 22	⬆ 2	⬆ 2	⬆ 2			67.0	33.0
171	Saudi Primes	2268	⬇ 5	⬆ 2	⬆ 2	⬆ 3				100.0
172	GIMPS_KS	2192	⬆ 65	⬆ 19	⬆ 2	⬆ 3			36.7	61.9	1.4
173	Optimists Prime	2135	⬇ 27	⬇ 26	⬇ 20			100.0
174	Subprime Searches	2002	⬇ 4	⬇ 7	⬆ 2	⬆ 2	87.2			12.8
175	The Pensis	1869	⬆ 1	⬆ 2	⬆ 2	⬆ 2				100.0
176	F=dp/dt	1845	⬆ 1	⬆ 2	⬆ 2	⬆ 2			85.8	14.2
177	Obsidian	1821	⬆ 14	⬆ 2	⬆ 2	⬆ 2				100.0
178	Zorin OS Crew	1722	⬇ 17	⬇ 16	⬇ 14	⬇ 16			44.8	55.2
179	GIMPS_IOM	1712	⬇ 1	⬆ 2	⬆ 1	⬆ 1	100.0
180	His Dark Materials	1629	⬇ 12		⬆ 1	⬆ 1				53.0	47.0
181	ANDY	1588	⬇ 30	⬇ 27	⬆ 1	⬆ 1			98.4	1.6
182	San Francisco	1586	⬇ 2	⬆ 3	⬆ 1	⬆ 1			100.0
183	cr_colorado	1549	⬆ 11	⬆ 3	⬆ 1	⬆ 1				100.0
184	TimE4This	1481		⬆ 4	⬆ 3	⬆ 1				100.0
185	CZAsTc	1447	⬆ 51	⬆ 48	⬆ 3	⬆ 1			99.6	0.4
186	alan145	1384	⬇ 30	⬇ 11		⬆ 1	72.3	2.2		0.3	25.2
187	math.auth.gr	1355	⬆ 21	⬆ 19	⬆ 2	⬆ 1			61.7	38.3
188	Happy	1341		⬆ 2	⬆ 2	⬆ 1					99.9
189	Morocco	1060	⬆ 48	⬆ 16	⬆ 4	⬆ 1				100.0
190	BrainStone	955	⬇ 27	⬇ 8	⬆ 1	⬆ 1				100.0
191	The East Coast	815	⬇ 62	⬇ 36	⬇ 39	⬇ 31	100.0
192	AWC	801	⬆ 45	⬆ 43					100.0
193	GIMPS Asturias	794	⬆ 5		⬆ 1				99.6	0.4
194	Weatopians	793	⬆ 5		⬆ 1				99.7	0.3
195	Sæve Nordic Prime	781	⬆ 5		⬆ 1				100.0
196	hreid	776	⬇ 13	⬆ 1	⬆ 1				100.0
197	crazyBerlin	774	⬇ 16	⬆ 1	⬆ 1				100.0
198	Artists of Fine Art	772	⬇ 50	⬇ 29	⬇ 13				99.2	0.8
199	UCLA Linux Users Group	769	⬇ 37	⬇ 12					100.0
200	ISISS Valle Seriana	761	⬆ 1		⬆ 1				99.6	0.4
201	Join Us 😈	708	⬆ 8	⬆ 6	⬆ 1		100.0
202	Therian Primes	587	⬆ 35	⬆ 14	⬆ 3			10.1		89.9
203	SGDynamo Dresden	580	⬇ 1	⬇ 1			100.0
204	PrimeObsession	539	⬆ 33							100.0
205	London Computation Club	478	⬆ 7	⬆ 3	⬆ 1					100.0
206	EggCelentes	466	⬇ 37	⬇ 38	⬆ 1					100.0
207	Czech National Team	353	⬇ 55	⬇ 6	⬆ 2		10.6			81.1	5.1
208	Team Dominik Radler	351	⬇ 1	⬆ 1			100.0
209	/r/counting	337	⬆ 18	⬆ 2	⬆ 1
210	KnightLight	315	⬆ 7	⬆ 2	⬆ 2					99.3
211	Team Bulgaria	288	⬇ 8	⬇ 8							99.9
212	Yurunago	276	⬆ 25	⬆ 23	⬆ 19					100.0
213	Unteranger Primelurche	268	⬇ 9							100.0
214	www.Adamek.biz	265	⬆ 4	⬆ 1						100.0
215	Math Teachers of the World	259	⬆ 4	⬆ 2					100.0
216	Math_Lovers	256	⬇ 27	⬇ 20						100.0
217	GIMPS Hams	253	⬆ 3	⬆ 1				100.0
218	Lithuania LT	247	⬆ 4	⬆ 2						100.0
219	DividerHunt	221	⬆ 6	⬆ 3			100.0
220	Manri Costa Rica	213	⬇ 46	⬇ 28						100.0
221	yfinder	208	⬆ 2	⬆ 2						100.0
222	Name (t) = A x e^kt	207	⬇ 11	⬆ 2						100.0
223	30thousandwon	193	⬇ 9	⬆ 2						100.0
224	miiro	131	⬆ 13	⬆ 11	⬆ 3	⬆ 1	100.0
225	GIMPS.Peace	122	⬆ 5	⬆ 1	⬇ 1	⬇ 1	44.7	55.3
226	TeamUbuntu	121	⬆ 3	⬆ 1	⬇ 1					100.0
227	TeamEc	49	⬇ 21	⬆ 1	⬇ 1						100.0
228	FourthFloorFourEyes	46	⬆ 4	⬆ 1			100.0
229	PROMYS	23	⬆ 4	⬆ 1							100.0
230	sannerud.com	10	⬆ 4	⬆ 2							100.0