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 2026-07-20 13:00 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	Slovakia	591008208	⬆ 1				0.1	97.4	0.1		2.4
2	GIMPS.Russia	350946578	⬇ 1				0.4		0.1		99.5
3	PrimeNet	149931206		⬆ 1			0.2	80.0	0.6	0.8	18.4
4	Ars Technica Team Prime Rib	144351213	⬆ 2	⬇ 1				99.2		0.7
5	POLAND	112046374	⬇ 1				0.9	95.2	0.5	0.1	3.3
6	-Too many Ones-	64388202	⬇ 1					77.4			22.6
7	Team#1	23007900	⬆ 6	⬆ 1			1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	19779065		⬇ 1			56.6	24.8	4.6	0.7	13.2
9	Numberphile	12552345	⬆ 9	⬆ 7	⬆ 3		3.2	17.8	4.9	1.6	72.4
10	UCM-curtisc	12104464	⬆ 2						99.2	0.8
11	Team-Deutschland	11886430					2.4	58.8	1.0	0.2	37.5
12	More Power!!!	10187850	⬆ 2		⬆ 1		17.1	69.2	2.8	2.4	8.4
13	TeamUK	6723003	⬆ 2	⬆ 1	⬆ 1		46.8	2.7	20.7	1.7	28.0	0.1
14	Porta Kruse	6355773	⬆ 2	⬆ 1	⬆ 1		2.0	0.5			91.2	6.2
15	One Man Team	6196833	⬇ 6	⬇ 2	⬆ 1			99.1	0.9
16	GW's legions	5955332	⬇ 6	⬇ 7	⬇ 7		0.1	2.0	88.8	4.0	5.1
17	GPU to 72	5328440					49.3	30.6	1.0	3.4	15.5
18	UW Eau Claire	3461878	⬆ 3		⬆ 1		90.6		6.8	2.5
19	tsc	3401053			⬇ 1		61.7	2.5	1.0	0.4	34.4
20	UKRAINE	2731720	⬆ 2				7.4	5.8	77.2	9.6
21	Argentina	2563445	⬆ 8				92.1		7.9
22	Wikipedia	1921883	⬆ 1				57.6	34.7	4.7	2.0	0.8
23	GIMPS.Korea	1472288	⬆ 7	⬆ 1			88.3	4.7	3.6	0.9	2.3
24	GIMPS.Occitania	1187674	⬆ 4	⬆ 1	⬆ 1	⬆ 1		4.4				95.6
25	SpongeBob SquarePants	1160994	⬇ 5	⬇ 2	⬇ 1	⬇ 1		30.3	62.8	6.9
26	Swedes Of Primes	1051768	⬆ 1				1.5	77.8	17.5	3.2
27	Dutch Power Cows	1047314	⬇ 3				42.8	10.9	1.5	2.4	42.3
28	MBAi.Cloud	844458	⬆ 3						99.9	0.1
29	404 - "Primes not Found"	699784	⬆ 14	⬆ 4			90.9		9.0	0.1
30	MATHSareREAL	578886	⬆ 2	⬇ 1			96.2		2.5	1.3
31	Buhr	501017	⬆ 4	⬇ 1			50.8	5.1	16.3	5.3	22.5
32	GIMPS.USA	460451	⬇ 7	⬆ 3			31.5	46.4	15.6	3.8	2.4
33	citizenscience.ru	418208		⬇ 1			86.2	2.2	6.5	1.0	3.6	0.4
34	Colorado School of Mines	402478	⬆ 5	⬆ 3			86.3		12.4	1.3
35	Rechenkraft.net	368911	⬆ 1	⬆ 1			0.2	51.5	6.0	6.9	35.3
36	Terry Kim Team	365554	⬆ 1	⬆ 2			95.6		3.3	0.7
37	GIMPS.Japan	359201	⬇ 11	⬇ 3			37.7		34.4	11.8	16.0
38	MOXA	356154	⬇ 4	⬆ 1			99.2		0.7	0.1
39	S485122	304336	⬇ 1	⬆ 1				95.1		4.9
40	nranks	259021	⬆ 6	⬆ 3	⬆ 3	⬆ 1	28.7	0.4	2.5	0.3	68.1
41	YahsTeam	244094		⬆ 1		⬇ 1	88.0		9.7	2.3
42	unRAID	229357	⬇ 35	⬇ 11	⬇ 2			64.8	31.5	3.1	0.6
43	Smoke-it	224708	⬇ 3	⬇ 2	⬇ 1		90.7	7.7	1.4
44	NanJing Tech	216777	⬆ 9				24.2		72.4	3.4
45	GIMPS Team Philippines	206292	⬇ 1	⬆ 1			50.8		10.0	1.9	33.0
46	NerdyGirls	194366	⬇ 1	⬇ 1				43.7	5.0	51.4
47	Canada	182956					7.7	1.4	66.1	24.8
48	Team Tartan	172250							76.8	23.2
49	OverclockerAustralia	146172					60.1		14.4	20.3
50	GIMPS.NZ	134391					80.4	0.2	10.0	9.4	0.1
51	Team China	127365							99.7	0.3
52	Unicamp	125173					66.9		29.6	3.5
53	IOTA	121908	⬆ 11	⬆ 1			95.2		3.4	1.4
54	GIMPS.France	116369	⬆ 3	⬇ 1			9.6	68.9	4.2	5.3	11.9
55	GIMPS.Portugal	111584	⬆ 27	⬆ 1	⬆ 4		50.3	47.7		2.0
56	VIPR	98005	⬆ 32	⬆ 13	⬆ 2		94.1		4.0	1.7
57	AMD Users	96200	⬆ 4		⬇ 2		48.5	0.6	9.9	40.6	0.4
58	UIUC	92346	⬆ 4	⬆ 1	⬇ 1				67.2	32.7
59	SASAKI	90734	⬇ 3	⬇ 4	⬇ 3		100.0
60	Wisconsin	81303	⬇ 2		⬆ 1		35.0		33.9	31.1
61	SHADO	79700	⬆ 2		⬇ 1				63.7	17.7	11.4	1.3
62	Wile E. Coyote	79578	⬆ 6						75.0	0.4	24.6
63	GIMPS China	78332	⬇ 8	⬇ 5			83.6		10.0	0.1	6.0
64	Net-Work	73873	⬆ 1				5.8	1.9			83.1
65	Eratosthenes Sieve	73272	⬆ 1				0.8		95.3	3.9
66	randomteam	71704	⬇ 24	⬆ 1							100.0
67	S147127	68057	⬆ 7	⬆ 4			32.4		22.4	45.1
68	Esperanto	65803	⬇ 1					25.7	4.9	69.3	0.1
69	ParadoxZ Commando	63515	⬆ 3	⬆ 3	⬆ 1				72.1	27.9
70	Team_Italia	63056	⬆ 1	⬆ 5	⬆ 3		3.0	0.6	65.9	23.2	3.4	2.4
71	Cap'n Entropy's Cavalcade of Wonderment	61332	⬇ 11	⬇ 5	⬇ 2		70.0	8.1	18.4	3.5
72	Team Israel	58665	⬆ 1	⬇ 2			96.9		2.7	0.4
73	BitMEX Research	57337	⬇ 19	⬇ 10	⬇ 2				94.5	5.5
74	Hungary	52997	⬇ 4	⬆ 2	⬆ 2				4.6	1.4	93.9
75	EgyptianPolymaths	52190	⬇ 16	⬇ 1				82.7
76	AJ	51940	⬇ 7	⬇ 3	⬇ 2				73.6	26.4
77	Brno University of Technology	47144	⬇ 1	⬆ 1				4.6	75.3	20.1
78	NUST	46532	⬆ 30	⬆ 29	⬆ 2		59.3	38.0	1.8	0.9
79	ComputerraRU	44653	⬇ 2	⬇ 2	⬇ 1		23.9		72.4	3.7
80	Team Belgium	38184	⬇ 2		⬇ 1	⬆ 1	1.4	2.5	31.2	26.6	38.2
81	GIMPS.NEO	37928	⬇ 6	⬇ 2		⬇ 1			80.4	19.6
82	huskers-gimps	37658	⬆ 3	⬆ 1	⬆ 1				75.6	24.4
83	Turku	36285	⬆ 1	⬇ 2	⬇ 1				100.0
84	Team Viet Nam	35013	⬇ 5	⬇ 2			34.9		38.0	27.1
85	Debian	33368	⬇ 4	⬆ 1	⬆ 2				98.2	1.8
86	Team H	33026		⬆ 1		⬆ 1	13.4		86.0	0.6
87	Hermessz	32845		⬆ 1	⬆ 1	⬇ 1	64.1		35.9
88	HardOCP	32534	⬇ 8	⬇ 4	⬇ 3				72.1	27.9
89	ᕙ(⇀‸↼‶)ᕗ	32322		⬇ 4			0.7		98.9	0.4
90	baraCUDA	29906	⬆ 132	⬇ 1					100.0
91	Aiblspitz	28033	⬆ 21	⬆ 5	⬆ 2		0.1	88.3	2.8	8.8
92	The Fellowship of Infinity	27356	⬆ 4		⬇ 1				99.5	0.5
93	Channel 4	27356		⬇ 2	⬇ 1				81.6	18.4
94	MurrayInfoSys	27228	⬆ 3		⬆ 1	⬆ 2			67.5	32.4
95	Costa Rica	27118			⬆ 1	⬇ 1			79.1	20.7
96	Small-Team-2000	27018	⬇ 6	⬇ 6	⬇ 2	⬇ 1			2.9	97.1
97	socal_prime	24802	⬇ 6	⬇ 4					75.9	23.9	0.1
98	Georgia Tech	20319	⬆ 5	⬇ 1					100.0
99	LimePrime	19080	⬇ 1	⬆ 4				7.4	82.9	9.7
100	Team Retired	17828	⬇ 1	⬇ 1					30.7	11.9
101	A Single Engineer	17718		⬇ 3					74.7	25.3
102	Com Systems (RU)	17650	⬆ 15	⬆ 2	⬆ 1				70.9	29.1
103	GIMPS Romania	16577	⬆ 1	⬇ 1	⬇ 1		77.6		19.3	3.1
104	PrimitiveRootsCircle	15769	⬇ 4	⬇ 3			15.4		50.2	31.3	3.1
105	SpartaAlumni	15513	⬇ 3	⬇ 5					75.9	24.1
106	TurkishMath	15292	⬆ 20	⬆ 2					94.9	5.1
107	Spain	13473	⬇ 2	⬇ 1					69.9	30.1
108	RobotechResearch	13400	⬆ 19	⬆ 1					47.8	52.2
109	moeses	12607	⬆ 7	⬆ 1					98.9	1.1
110	Quantus	12170	⬆ 4	⬆ 3			10.0		13.0	25.1		51.9
111	Ozzie Prime	12077	⬇ 4						39.3	15.5		45.3
112	Portland State University	11107	⬇ 3	⬆ 7				40.9	44.6	14.5
113	FREE ROBUX	10852	⬆ 6	⬆ 3	⬆ 1				100.0
114	Nerdfighters for Mersenne Primes	10792	⬇ 3	⬇ 2	⬇ 1				95.1	4.9
115	Team Slovenia	10707		⬇ 1					65.5	34.5
116	Royal Military College of Canada	10691	⬆ 4	⬆ 1	⬆ 1		89.7		7.9	2.4
117	Team Finland	10611	⬇ 7	⬆ 1	⬆ 2		1.5		96.0		2.5
118	MES-Team	10557	⬇ 26	⬇ 13	⬇ 2		66.9	7.3		25.9
119	University of Waterloo	9703	⬆ 18	⬆ 2	⬇ 1				94.4	5.6
120	Shaffer's Studio	9552	⬆ 10	⬆ 6					89.9	9.9
121	Syntony	9319	⬆ 4	⬆ 1						100.0
122	LTT fans	9056	⬇ 39	⬆ 3			92.5				7.5
123	math.auth.gr	8551	⬆ 12	⬆ 6	⬆ 3	⬆ 1			100.0
124	JiBoTeam	8443	⬆ 4		⬆ 1	⬇ 1				100.0
125	Pavlicin	8407	⬆ 97	⬆ 5	⬆ 2		79.7	0.1	20.2
126	Mensa	8397	⬇ 5	⬇ 3	⬆ 2				84.3	15.6
127	SETI.Germany	8289	⬇ 21	⬇ 12	⬆ 3			11.4		88.6
128	The_Dude_Abides	8120	⬆ 24	⬆ 18	⬆ 3	⬆ 3	2.5		30.7	50.3	1.2
129	Server66	7983	⬆ 10	⬆ 7	⬆ 3	⬇ 1	100.0
130	Die Zeitfinder	7955	⬇ 1	⬇ 3	⬇ 7	⬇ 1			90.3	9.7
131	Granada	7909	⬇ 8	⬇ 11	⬇ 7	⬇ 1	27.1		20.1	51.9
132	FreeBSD	7605	⬇ 1	⬇ 1	⬇ 3				73.4	26.6
133	Prime Rib	7371	⬆ 5		⬆ 4				96.8	3.2
134	Triangle	7150		⬇ 2					98.6	1.4
135	Abacus	7147	⬇ 3		⬇ 2				98.8	1.2
136	GIMPS.Taiwan	7047	⬇ 12	⬇ 8	⬇ 1				81.2	18.1	0.1
137	Arpan Sen Labs	6686	⬆ 28	⬆ 4	⬇ 1				55.4	44.6
138	FactorMania	6572	⬆ 13	⬇ 1				56.9			43.1
139	Brasil	6394	⬆ 1						73.8	26.1
140	Team Norway	6120	⬇ 27	⬇ 6			73.6			8.3	17.7
141	Team Christensen	6082	⬆ 2	⬇ 1						100.0
142	irowiki	5988	⬇ 1	⬇ 4						100.0
143	México mágico	5568	⬆ 13	⬇ 1					85.3	14.6
144	Korea.Prime	5515	⬆ 17	⬆ 7					71.5	28.5
145	Morocco	5432	⬆ 28						60.2	39.8
146	KnightLight	5027		⬇ 2						100.0
147	teamMALI	4955	⬆ 8	⬆ 7	⬆ 6				79.6	20.4
148	nmbarek_team	4942		⬇ 1	⬇ 1				100.0
149	DePaul MAT 141	4934	⬆ 73	⬇ 1	⬇ 1				99.6	0.4
150	Crunching@EVGA	4888	⬇ 1	⬇ 1	⬇ 1				99.7	0.3
151	YESHUA IS THE MESSIAH	4648	⬆ 27	⬆ 2	⬇ 1				99.2	0.8
152	Hong Kong GIMP	4456	⬆ 2						70.5	29.4
153	Noam Karni Team	3963	⬆ 6	⬆ 2	⬆ 1				79.7	20.3
154	Phi Kappa Theta	3761	⬆ 6	⬆ 5	⬆ 1				66.0	33.9
155	Elisabeth-von-Thadden-Schule	3557	⬇ 11	⬇ 12	⬇ 4				65.1	34.8
156	Hyperion	3423	⬇ 23	⬇ 6						16.4
157	Politeknik Banting, Selangor	3101	⬇ 35	⬆ 3			65.4		25.5	9.1
158	Olympic College	3075	⬇ 1	⬇ 2						100.0
159	GIMPS.Hong Kong	2626	⬆ 3	⬆ 5	⬆ 1		2.1		61.4	36.4
160	Pi Rho	2499	⬆ 8	⬆ 5	⬆ 1				67.1	32.9
161	GIMPSMalaysia	2394	⬆ 8	⬆ 5	⬆ 1				66.8	33.2
162	zeit	2322	⬇ 4		⬆ 1		11.8			88.2
163	CZAsTc	2288	⬆ 22	⬆ 16	⬆ 1				99.5	0.4
164	Team Austria	2199	⬇ 70	⬆ 5	⬆ 1		12.8	9.5	77.7
165	GIMPS_KS	2199	⬆ 7	⬆ 5	⬆ 1				36.5	62.0	1.4
166	Kabylie	2179	⬇ 3	⬆ 2	⬆ 1		16.1	2.0	35.6	46.3
167	Furry Primes	1966	⬇ 17	⬇ 4	⬆ 1		73.9			26.1
168	The Prime Pioneers	1919	⬆ 6	⬆ 3	⬆ 2			100.0
169	The Pensis	1869	⬆ 6	⬆ 3	⬆ 2					100.0
170	VRS_SE	1852		⬇ 3	⬇ 1				85.1	14.9
171	San Francisco	1586	⬆ 10	⬆ 3	⬆ 1				100.0
172	hreid	1575	⬆ 10	⬆ 3	⬆ 1				100.0
173	cr_colorado	1549	⬆ 10	⬆ 3	⬆ 1					100.0
174	Obsidian	1542	⬆ 3	⬆ 3	⬆ 1					100.0
175	3DCenter.org	1194	⬇ 9	⬆ 5	⬆ 2	⬆ 1					100.0
176	The Planetary Society	1120	⬆ 46	⬆ 44	⬆ 38	⬆ 1			76.1	23.9
177	Amserver	1066	⬆ 45	⬆ 4	⬆ 1	⬆ 1	100.0
178	Join Us 😈	1060	⬆ 19	⬆ 4	⬆ 1	⬆ 1	66.8			33.2
179	youngfun429	1037	⬇ 34	⬆ 4	⬆ 1	⬆ 1			75.3	24.7
180	TunisianTeam	1031	⬆ 6	⬆ 4	⬆ 1	⬆ 1			75.0	25.0
181	I Love Canadian Natural Resources	1018	⬇ 14	⬇ 3	⬇ 5	⬇ 6				100.0
182	Therian Primes	1007	⬆ 5	⬆ 3				14.6		52.4	33.0
183	Team Bulgaria	905	⬆ 30	⬆ 35					95.0		5.0
184	Czech National Team	903	⬆ 5	⬆ 2			4.1		91.8	0.8	2.0
185	RafaÅ‚ HacuÅ›	860	⬆ 37	⬆ 3					100.0
186	AWC	801	⬆ 5	⬆ 3					100.0
187	GIMPS Asturias	794	⬆ 5	⬆ 4					99.6	0.4
188	Weatopians	793	⬆ 5	⬆ 4					99.7	0.3
189	TimE4This	626	⬆ 1	⬇ 2						100.0
190	SGDynamo Dresden	564	⬆ 9	⬆ 4			100.0
191	PARG team	563	⬆ 28	⬆ 4						96.2	3.8
192	PrimeObsession	539	⬆ 8	⬆ 4						100.0
193	GIMPS.Romania	422	⬆ 29	⬆ 5					100.0
194	His Dark Materials	284	⬇ 6	⬆ 5							99.9
195	Yurunago	276	⬆ 8	⬆ 5						100.0
196	Vegan	275	⬆ 8	⬆ 5						100.0
197	Byberg Nordic Prime	265	⬆ 8	⬆ 5						100.0
198	FDY	265	⬆ 24	⬆ 5						100.0
199	Subprime Searches	256	⬇ 20	⬆ 5						100.0
200	GIMPS Hams	253	⬆ 9	⬆ 5				100.0
201	WSU Cougars	247	⬇ 30	⬇ 4						100.0
202	miiro	240	⬆ 12	⬆ 6			100.0
203	Zorin OS Crew	237	⬇ 19	⬆ 6						100.0
204	DividerHunt	221	⬆ 6	⬆ 6	⬆ 1	⬆ 1	100.0
205	GIMPS_IOM	215	⬇ 29	⬇ 12	⬇ 1	⬇ 1	100.0
206	Manri Costa Rica	213	⬆ 5	⬆ 6	⬆ 1					100.0
207	/r/counting	184		⬆ 6	⬆ 1
208	Team Dominik Radler	183	⬇ 6	⬇ 2	⬇ 2		100.0
209	GIMPS.Peace	122	⬆ 6	⬆ 5	⬆ 1		44.7	55.3
210	sannerud.com	108	⬆ 7	⬆ 6	⬆ 1		43.1				19.4	37.5
211	alan145	59	⬇ 13		⬇ 2		100.0
212	PROMYS	23	⬆ 6	⬆ 5							100.0
213	yfinder	1	⬆ 8	⬆ 6						100.0