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 2026-08-20 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	206237426	⬆ 1	⬆ 1			0.6		0.2		99.1
2	Ars Technica Team Prime Rib	165811449	⬆ 2	⬆ 2				99.3		0.7
3	Slovakia	156782241	⬇ 2	⬇ 2			0.3	88.4	0.4	0.1	10.8
4	PrimeNet	150426320	⬆ 1	⬇ 1			0.2	80.0	0.6	0.8	18.4
5	POLAND	111260007	⬇ 2				1.0	95.9	0.4	0.1	2.6
6	-Too many Ones-	66356822						78.0			22.0
7	Team#1	23007900	⬆ 1				1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20722925	⬇ 1				46.9	31.8	4.4	0.7	16.2
9	Numberphile	12615405	⬆ 8				3.4	18.0	4.8	1.7	72.0
10	UCM-curtisc	12404785	⬆ 1						99.2	0.8
11	Team-Deutschland	11551031	⬆ 1				2.1	63.2	1.1	0.2	33.2
12	More Power!!!	9251220	⬆ 1				18.3	73.9	3.2	2.9	1.7
13	TeamUK	6459571	⬆ 1				45.7	2.6	21.4	1.8	28.4
14	Porta Kruse	6334635	⬆ 1				2.0	0.5			91.2	6.2
15	GW's legions	6065897	⬇ 5	⬆ 1			0.1	1.8	89.3	4.1	4.7
16	GPU to 72	5846864		⬆ 1			45.2	35.6	1.6	3.2	14.2
17	tsc	3715815	⬆ 3	⬆ 2	⬆ 2		56.8	2.2	0.9	0.3	39.8
18	One Man Team	3657003	⬇ 9	⬇ 3	⬇ 1			98.7	1.3
19	UW Eau Claire	3654141	⬇ 1	⬇ 1	⬇ 1		91.1		6.5	2.4
20	UKRAINE	2950793	⬆ 2				5.4	4.8	81.3	8.5
21	Argentina	2563445					92.1		7.9
22	Wikipedia	1904431	⬆ 2				57.1	35.1	4.7	2.0	0.9
23	GIMPS.Korea	1677393	⬆ 4				87.6	4.6	3.6	0.8	3.3
24	GIMPS.Occitania	1187005	⬆ 2					4.4				95.6
25	404 - "Primes not Found"	965932	⬆ 15	⬆ 4	⬆ 1		93.4		6.6	0.1
26	Swedes Of Primes	930644	⬇ 1		⬇ 1		1.7	77.2	17.7	3.4
27	MBAi.Cloud	823220	⬆ 2	⬆ 1	⬆ 1				99.9	0.1
28	Dutch Power Cows	765155		⬇ 1	⬇ 1		57.8	14.5	2.1	3.4	22.3
29	SpongeBob SquarePants	685325	⬇ 6	⬇ 4				30.5	65.4	4.0
30	MATHSareREAL	578886					96.2		2.5	1.3
31	Buhr	474752	⬆ 1		⬆ 1		45.2	5.8	16.8	5.6	26.6
32	GIMPS.USA	473694	⬆ 10		⬇ 1		30.5	45.1	17.6	4.1	2.3
33	Colorado School of Mines	415333	⬆ 4	⬆ 1			83.7		15.1	1.3
34	citizenscience.ru	377764	⬇ 3	⬇ 1			85.1	1.5	8.3	1.1	4.0
35	MOXA	357953		⬆ 3	⬆ 1		99.6		0.4
36	Rechenkraft.net	353480	⬇ 2	⬇ 1	⬆ 1		0.1	50.9	6.1	7.0	35.9
37	Terry Kim Team	338737	⬇ 1	⬇ 1	⬇ 2		95.4		3.4	0.9
38	GIMPS.Japan	301707	⬇ 5	⬇ 1			44.6		40.2	14.8	0.3
39	S485122	300946	⬇ 1					95.1		4.9
40	nranks	263481	⬆ 1				28.3	0.4	2.7	0.3	68.2
41	YahsTeam	230919	⬆ 2				86.8		10.6	2.6
42	NanJing Tech	216777	⬆ 5	⬆ 2			24.2		72.4	3.4
43	GIMPS Team Philippines	202332	⬆ 2	⬆ 2			47.9		11.0	2.2	34.4
44	NerdyGirls	186720		⬆ 2				45.5	4.7	49.8
45	Canada	170089	⬆ 1	⬆ 2			8.3	1.1	65.8	24.8
46	Team Tartan	165750	⬆ 2	⬆ 2					77.2	22.8
47	GIMPS.Portugal	152941	⬆ 11	⬆ 8			48.5	50.0		1.5
48	OverclockerAustralia	146081	⬆ 1	⬆ 1	⬆ 1		60.1		14.4	19.6
49	IOTA	144077	⬆ 8	⬆ 4	⬆ 1		93.6		4.7	1.7
50	GIMPS.NZ	137589	⬆ 1		⬆ 1		79.2	0.2	11.5	9.0	0.1
51	Team China	131723	⬆ 1		⬆ 1				99.7	0.3
52	Smoke-it	121605	⬇ 13	⬇ 9	⬇ 4		90.8	7.2	2.0
53	Unicamp	121319		⬇ 1			68.9		28.6	2.5
54	GIMPS.France	117218					9.5	68.4	4.9	5.3	11.8
55	VIPR	109761	⬆ 26	⬆ 1			95.4		2.9	1.5
56	unRAID	96142	⬇ 37	⬇ 14				27.5	64.3	7.4	0.8
57	UIUC	96057	⬆ 5	⬆ 1					67.3	32.7
58	AMD Users	93620	⬆ 3	⬇ 1			49.8	0.6	5.1	44.0	0.4
59	Wile E. Coyote	84776	⬆ 8	⬆ 2	⬆ 1				75.1	0.1	24.8
60	SASAKI	83399	⬇ 5	⬇ 1	⬇ 1		100.0
61	Wisconsin	74609	⬇ 1	⬇ 1			30.3		35.9	33.7
62	GIMPS China	73633	⬇ 6	⬆ 1	⬆ 2		81.4		11.8	0.1	6.4
63	SHADO	73211	⬆ 3	⬇ 1	⬇ 1				60.5	19.5	12.4	1.1
64	Net-Work	72667		⬆ 1	⬆ 1		6.1	1.0			81.9
65	Eratosthenes Sieve	72023		⬇ 1	⬇ 2		0.8		94.0	5.1
66	NUST	69879	⬆ 42	⬆ 11	⬆ 2		54.5	43.7	1.2	0.6
67	S147127	68013	⬆ 4		⬇ 1		33.8		25.9	40.2
68	Team_Italia	65765	⬆ 6	⬆ 1	⬇ 1		3.1	0.5	64.4	23.6	4.5	2.1
69	Esperanto	64389		⬇ 1				25.8	3.7	70.4
70	ParadoxZ Commando	62972	⬆ 3						71.8	28.2
71	Cap'n Entropy's Cavalcade of Wonderment	54287	⬇ 8		⬆ 1		70.6	8.9	16.6	3.9
72	Team Israel	53541			⬆ 1		96.5		3.0	0.5
73	Hungary	50671	⬆ 2	⬆ 1	⬆ 1	⬆ 1			4.8	1.0	94.1
74	EgyptianPolymaths	50665	⬇ 6	⬆ 1	⬆ 1	⬇ 1		85.2
75	ComputerraRU	47486	⬆ 2	⬆ 4	⬆ 1		24.5		70.2	5.3
76	AJ	45414	⬇ 6		⬆ 2				74.1	25.9
77	Brno University of Technology	44305	⬇ 1	⬆ 1					78.5	21.5
78	Team Belgium	37716	⬆ 1	⬆ 2	⬆ 2		1.4	2.6	31.6	25.7	38.7
79	BitMEX Research	37251	⬇ 20	⬇ 6		⬆ 1			91.6	8.4
80	Turku	36285	⬆ 2	⬆ 3	⬆ 2	⬆ 1			100.0
81	huskers-gimps	35839	⬆ 2	⬆ 1		⬆ 1			75.0	25.0
82	Aiblspitz	35108	⬆ 21	⬆ 9	⬆ 4	⬆ 1		93.0		7.0
83	Team Viet Nam	33992	⬇ 3	⬆ 1		⬆ 1	35.9		39.1	24.9
84	GIMPS.NEO	33964	⬇ 6	⬇ 3		⬆ 1			83.1	16.9
85	Debian	33368	⬆ 1	⬆ 1		⬆ 2			98.2	1.8
86	Hermessz	32946	⬆ 2	⬆ 1	⬆ 1		64.1		33.5	2.4
87	randomteam	31949	⬇ 37	⬇ 21	⬇ 16	⬇ 8					100.0
88	Team H	31697	⬇ 4	⬇ 3			14.5		84.9	0.6
89	ᕙ(⇀‸↼‶)ᕗ	31555	⬇ 2				0.7		98.9	0.4
90	baraCUDA	29906	⬇ 1						100.0
91	The Fellowship of Infinity	28952	⬆ 2	⬆ 1					99.5	0.5
92	HardOCP	26994	⬇ 7	⬇ 4					72.4	27.6
93	MurrayInfoSys	26738	⬆ 2	⬆ 1	⬆ 1				65.9	34.1
94	Small-Team-2000	26730	⬇ 4	⬆ 2	⬆ 1				3.0	97.0
95	Channel 4	26315	⬇ 3	⬇ 2	⬆ 1				81.8	18.1
96	Costa Rica	23111	⬇ 2	⬇ 1	⬇ 3				78.7	21.0
97	socal_prime	22766	⬇ 6						72.5	27.3	0.1
98	Georgia Tech	20319							100.0
99	Com Systems (RU)	18708	⬆ 10	⬆ 3					71.2	28.8
100	LimePrime	18629	⬆ 5	⬇ 1				0.8	89.2	10.0
101	GIMPS Romania	17420	⬆ 1	⬆ 2	⬆ 1		73.8		23.2	3.0
102	A Single Engineer	16947	⬇ 3	⬇ 1	⬇ 1				73.6	26.4
103	PrimitiveRootsCircle	15561	⬆ 1	⬆ 1	⬆ 2	⬆ 1	9.2		61.2	26.9	2.7
104	Team Retired	15560	⬇ 4	⬇ 4		⬇ 1			25.0	11.8
105	SpartaAlumni	15548	⬇ 4		⬇ 2				76.0	24.0
106	TurkishMath	15298	⬆ 10						94.9	5.1
107	RobotechResearch	15249	⬆ 10	⬆ 1					52.3	47.7
108	moeses	13413	⬆ 3	⬆ 1					99.0	1.0
109	Quantus	12170	⬆ 5	⬆ 1			10.0		13.0	25.1		51.9
110	Portland State University	11476	⬇ 3	⬆ 2	⬆ 7	⬆ 4		39.3	58.1	2.6
111	Spain	11136	⬇ 5	⬇ 4	⬇ 1	⬇ 1			70.4	29.6
112	FREE ROBUX	10852	⬆ 7	⬆ 1		⬇ 1			100.0
113	Team Slovenia	10722		⬆ 2	⬆ 1	⬇ 1			65.6	34.4
114	Royal Military College of Canada	10691	⬆ 6	⬆ 2	⬆ 1	⬇ 1	89.7		7.9	2.4
115	Team Finland	10589		⬆ 2	⬆ 1		1.3		96.2		2.5
116	Prime Rib	9942	⬆ 22	⬆ 17	⬇ 3				97.7	2.3
117	Nerdfighters for Mersenne Primes	9775	⬇ 5	⬇ 3	⬆ 1				97.1	2.9
118	University of Waterloo	9729	⬆ 12	⬆ 1	⬆ 1				94.4	5.6
119	Syntony	9597	⬆ 5	⬆ 2	⬆ 1					100.0
120	Shaffer's Studio	9526	⬆ 7		⬆ 2				90.4	9.5
121	Mensa	9394	⬆ 5	⬆ 5	⬆ 9	⬆ 4			68.0	32.0
122	LTT fans	9056	⬇ 25		⬇ 1	⬇ 1	92.5				7.5
123	Ozzie Prime	8804	⬇ 13	⬇ 12	⬇ 12	⬇ 1			27.2	18.3		54.5
124	SETI.Germany	8556	⬇ 6	⬆ 4	⬆ 3	⬇ 1		11.1		88.9
125	math.auth.gr	8551	⬆ 7	⬇ 2	⬇ 1	⬇ 1			100.0
126	JiBoTeam	8461	⬆ 2	⬇ 2	⬆ 2					100.0
127	Pavlicin	8407	⬆ 23	⬇ 2	⬇ 2		79.7	0.1	20.2
128	The_Dude_Abides	8388	⬆ 27	⬇ 1	⬇ 2				29.8	52.4	1.2
129	Die Zeitfinder	7985		⬆ 1					90.3	9.7
130	Arpan Sen Labs	7744	⬆ 19	⬆ 7	⬆ 2				58.0	42.0
131	Triangle	7147		⬆ 4	⬆ 2				98.9	1.1
132	Morocco	7092	⬆ 33	⬆ 13	⬆ 3				58.1	41.9
133	FreeBSD	7074	⬆ 1	⬇ 1	⬇ 2				67.7	32.3
134	GIMPS.Taiwan	7047	⬇ 12	⬆ 2	⬆ 2				81.2	18.1	0.1
135	Server66	6758	⬆ 24	⬇ 6	⬇ 12		100.0
136	FactorMania	6572	⬆ 4	⬆ 2	⬆ 1			56.9			43.1
137	Abacus	6370	⬇ 2	⬇ 3	⬇ 3				98.6	1.3
138	Granada	6302	⬇ 17	⬇ 7			33.1		25.2	41.3
139	Team Christensen	6120	⬆ 2	⬆ 2						100.0
140	irowiki	5827	⬇ 1	⬆ 2						100.0
141	México mágico	5568	⬆ 1	⬆ 2					85.3	14.6
142	Korea.Prime	5520	⬆ 10	⬆ 2					71.4	28.6
143	Brasil	5432	⬇ 7	⬇ 4					72.6	27.2
144	Hong Kong GIMP	5277	⬆ 9	⬆ 8					75.4	24.6
145	KnightLight	4970		⬆ 1						100.0
146	teamMALI	4955	⬆ 1	⬆ 1					79.6	20.4
147	nmbarek_team	4942	⬇ 1	⬆ 1					100.0
148	DePaul MAT 141	4934	⬆ 29	⬆ 1					99.6	0.4
149	Crunching@EVGA	4888	⬇ 1	⬆ 1					99.7	0.3
150	YESHUA IS THE MESSIAH	4648	⬆ 12	⬆ 1					99.2	0.8
151	Phi Kappa Theta	4603	⬆ 6	⬆ 3					72.3	27.7
152	Team Norway	4467	⬇ 27	⬇ 12			73.7			5.7	20.1
153	Noam Karni Team	3963	⬆ 3		⬆ 1	⬆ 1			79.7	20.3
154	MES-Team	3924	⬇ 58	⬇ 36	⬇ 1	⬇ 1	67.1	7.6		25.3
155	Olympic College	3075	⬆ 3	⬆ 3	⬆ 1	⬆ 1				100.0
156	GIMPS.Hong Kong	2905	⬆ 4	⬆ 3	⬆ 1	⬆ 1	1.9		55.5	42.6
157	Politeknik Banting, Selangor	2821	⬇ 13		⬇ 2	⬇ 2	71.9		28.0	0.1
158	Pi Rho	2499	⬆ 11	⬆ 2	⬆ 1				67.1	32.9
159	GIMPSMalaysia	2394	⬆ 11	⬆ 2	⬆ 1				66.8	33.2
160	CZAsTc	2288	⬆ 23	⬆ 3	⬆ 2				99.6	0.4
161	The Planetary Society	2237	⬆ 63	⬆ 15	⬆ 2				76.1	23.9
162	Team Austria	2199	⬇ 39	⬆ 2	⬆ 2		12.8	9.5	77.7
163	GIMPS_KS	2199	⬆ 9	⬆ 2	⬆ 2				36.5	62.0	1.4
164	zeit	2075	⬇ 1	⬇ 2	⬆ 2		13.2			86.8
165	Hyperion	2015	⬇ 28	⬇ 9	⬇ 4					27.4
166	SETI.USA	1960	⬆ 58	⬆ 48	⬆ 1				43.4	56.6
167	The Prime Pioneers	1919	⬆ 7	⬆ 1	⬆ 1			100.0
168	VRS_SE	1846	⬆ 3	⬆ 2	⬆ 1				85.4	14.6
169	Obsidian	1817	⬆ 12	⬆ 5	⬆ 1					100.0
170	Elisabeth-von-Thadden-Schule	1788	⬇ 27	⬇ 15	⬇ 12				86.5	13.5
171	San Francisco	1586	⬆ 7						100.0
172	hreid	1575	⬆ 7						100.0
173	cr_colorado	1549	⬆ 7							100.0
174	I Love Canadian Natural Resources	1542	⬆ 8	⬆ 7	⬆ 5					100.0
175	Furry Primes	1202	⬇ 14	⬇ 8	⬇ 1		57.2			42.8
176	Amserver	1066	⬆ 48	⬆ 1			100.0
177	Join Us 😈	1060	⬆ 10	⬆ 1			66.8			33.2
178	youngfun429	1037	⬇ 5	⬆ 1		⬆ 1			75.3	24.7
179	Kabylie	1031	⬇ 13	⬇ 13	⬇ 4	⬇ 1	26.7			73.3
180	Therian Primes	1007	⬆ 9	⬆ 2				14.6		52.4	33.0
181	Team Bulgaria	905	⬆ 39	⬆ 2					95.0		5.0
182	RafaÅ‚ HacuÅ›	860	⬆ 42	⬆ 3	⬆ 1				100.0
183	Czech National Team	860	⬆ 7	⬆ 1	⬆ 1				96.4	0.5	1.8
184	Catalunya Team	859	⬆ 40	⬆ 30	⬆ 29				99.3	0.7
185	The Court of the Math Jester	854	⬆ 39	⬆ 29	⬆ 28				100.0
186	UMD University of Maryland Prime Hunters	850	⬆ 38	⬆ 28	⬇ 1				100.0
187	AWC	801	⬆ 5	⬇ 1	⬇ 1				100.0
188	GIMPS Asturias	794	⬆ 6	⬇ 1	⬇ 1				99.6	0.4
189	Weatopians	793	⬆ 6	⬇ 1	⬇ 1				99.7	0.3
190	3DCenter.org	727	⬇ 14	⬇ 15	⬇ 8						100.0
191	SGDynamo Dresden	579	⬆ 7	⬇ 1	⬇ 2		100.0
192	PARG team	563	⬆ 11	⬇ 1	⬇ 2					96.2	3.8
193	PrimeObsession	539	⬆ 6	⬇ 1	⬇ 2					100.0
194	GIMPS.Romania	422	⬆ 6	⬇ 1	⬇ 2				100.0
195	LIKN	285	⬆ 29	⬆ 19	⬇ 2					99.9
196	Denmark	277	⬆ 28	⬆ 18	⬆ 17					100.0
197	Yurunago	276	⬆ 8	⬇ 2	⬇ 3					100.0
198	Vegan	275	⬆ 8	⬇ 2	⬇ 3					100.0
199	Byberg Nordic Prime	265	⬆ 8	⬇ 2	⬇ 3					100.0
200	FDY	265	⬆ 8	⬇ 2	⬇ 3					100.0
201	TunisianTeam	258	⬇ 13	⬇ 21	⬇ 3					100.0
202	Subprime Searches	256	⬇ 16	⬇ 3	⬇ 3					100.0
203	GIMPS Hams	253	⬆ 8	⬇ 3	⬇ 2			100.0
204	WSU Cougars	247	⬇ 20	⬇ 3	⬇ 2					100.0
205	miiro	240	⬆ 11	⬇ 3	⬇ 2		100.0
206	DividerHunt	221	⬆ 6	⬇ 2	⬇ 2		100.0
207	alan145	196	⬇ 6	⬆ 4	⬇ 7		85.0				15.0
208	His Dark Materials	188	⬇ 11	⬇ 14	⬇ 3						99.9
209	/r/counting	184	⬆ 6	⬇ 2	⬇ 3
210	GIMPS_IOM	153	⬇ 25	⬇ 5	⬇ 2		100.0
211	Team Dominik Radler	137	⬇ 7	⬇ 3	⬇ 4		100.0
212	GIMPS.Peace	122	⬆ 5	⬇ 3	⬇ 3		44.7	55.3
213	sannerud.com	108	⬆ 6	⬇ 3	⬇ 3		43.1				19.4	37.5
214	PROMYS	23	⬆ 7	⬇ 2	⬇ 3						100.0
215	yfinder	1	⬆ 7	⬇ 2	⬇ 3					100.0