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 2026-09-13 15:00 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	Ars Technica Team Prime Rib	181549605	⬆ 2	⬆ 1				99.3		0.6
2	Slovakia	155992372	⬇ 1	⬆ 1			0.3	88.4	0.4	0.1	10.8
3	PrimeNet	150990691	⬆ 1	⬆ 1			0.2	80.1	0.6	0.8	18.3
4	GIMPS.Russia	144194583	⬇ 2	⬇ 3			0.9	0.1	0.3		98.7
5	POLAND	111532946					0.9	96.1	0.4	0.1	2.5
6	-Too many Ones-	67535457						78.4			21.6
7	Team#1	23007900	⬆ 1				1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20127025	⬇ 1				45.5	31.8	4.4	0.7	17.6
9	UCM-curtisc	12842260	⬆ 1	⬆ 1	⬆ 1				99.2	0.8
10	Numberphile	12648398	⬆ 6	⬇ 1	⬇ 1		3.4	18.2	4.9	1.7	71.9
11	Team-Deutschland	11020413					1.9	66.3	1.4	0.2	30.1
12	More Power!!!	8782858					18.0	73.7	3.4	3.1	1.8
13	Porta Kruse	6306057	⬆ 2	⬆ 1			2.0	0.5			91.1	6.2
14	TeamUK	6220348		⬇ 1			45.2	2.3	21.6	1.9	28.9
15	GW's legions	6166089	⬇ 6				0.1	1.9	89.5	4.1	4.3
16	GPU to 72	5988574	⬆ 1				42.7	38.2	2.3	3.1	13.5
17	tsc	3950024	⬆ 2	⬆ 2			55.3	1.8	0.9	0.3	41.7
18	UW Eau Claire	3654141					91.1		6.5	2.4
19	UKRAINE	3360686	⬆ 1	⬆ 1			3.3	4.7	84.9	7.1
20	Argentina	2563445	⬆ 1	⬆ 1			92.1		7.9
21	Wikipedia	1835965	⬆ 1	⬆ 1			55.7	36.3	4.9	2.0	0.9
22	GIMPS.Korea	1835320	⬆ 2	⬆ 1			87.0	4.4	3.5	0.8	4.3
23	Dutch Power Cows	1321567	⬆ 4	⬆ 4			29.6	8.2	1.1	1.9	59.1
24	GIMPS.Occitania	1185058	⬆ 1					4.5				95.5
25	404 - "Primes not Found"	1011079	⬆ 12	⬆ 1			92.0		7.9	0.1
26	Swedes Of Primes	842216		⬇ 1			2.0	76.4	18.1	3.5
27	MBAi.Cloud	807587	⬆ 1	⬆ 1					99.9	0.1
28	MATHSareREAL	578886	⬆ 1	⬆ 2			96.2		2.5	1.3
29	GIMPS.USA	541832	⬆ 13	⬆ 2			36.8	39.4	17.8	3.7	2.0
30	Buhr	475364		⬆ 2			43.3	6.6	16.3	5.6	28.2
31	Colorado School of Mines	424402	⬆ 4	⬆ 2			81.9		16.6	1.4
32	citizenscience.ru	378217		⬆ 2	⬆ 1		86.7	0.8	7.9	1.0	3.6
33	MOXA	357334	⬆ 5	⬆ 2	⬆ 1		99.8		0.2
34	Rechenkraft.net	345286		⬆ 3	⬆ 1		0.1	51.2	5.1	7.2	36.4
35	SpongeBob SquarePants	328163	⬇ 12	⬇ 6	⬇ 3			32.5	64.1	3.4
36	S485122	302193	⬆ 3	⬆ 3				95.0		5.0
37	GIMPS.Japan	297369	⬇ 4	⬆ 1			44.9		40.1	14.7	0.3
38	Terry Kim Team	278697	⬇ 2	⬇ 2			94.6		4.1	0.9
39	nranks	262682	⬆ 4	⬆ 1			28.5	0.4	2.4	0.2	68.4
40	NanJing Tech	235829	⬆ 5	⬆ 2			22.2		67.1	10.5
41	YahsTeam	216713					87.1		10.0	2.8
42	GIMPS Team Philippines	208262	⬆ 4	⬆ 1		⬆ 1	46.5		10.7	2.1	36.3
43	unRAID	193739	⬇ 12	⬆ 13	⬆ 7	⬇ 1		63.3	26.1	3.6	7.0
44	NerdyGirls	179181			⬇ 1			45.1	5.4	49.5
45	Team Tartan	162177	⬆ 3	⬆ 1	⬇ 1				77.7	22.3
46	Canada	156169	⬆ 1	⬇ 1	⬇ 1		9.0	0.8	64.8	25.3
47	GIMPS.Portugal	155241	⬆ 8		⬇ 1		49.3	49.2		1.4
48	IOTA	152253	⬆ 6	⬆ 2	⬇ 1		93.8		4.4	1.8
49	GIMPS.NZ	137081	⬆ 1	⬆ 2	⬇ 1		79.7	0.2	11.6	8.5	0.1
50	Team China	132840	⬆ 1	⬆ 2	⬇ 1		0.1		99.6	0.3
51	Unicamp	113082	⬆ 1	⬆ 2			69.4		28.6	2.0
52	VIPR	111652	⬆ 21	⬆ 3	⬆ 1		96.4		2.1	1.3
53	UIUC	98420	⬆ 6	⬆ 4	⬆ 2				67.4	32.6
54	AMD Users	93075	⬆ 3	⬆ 4	⬆ 2	⬆ 1	50.1	0.6	1.7	47.1	0.4
55	ComputerraRU	91407	⬆ 23	⬆ 21	⬆ 3	⬆ 2	63.7		33.5	2.7
56	OverclockerAustralia	90762	⬇ 7	⬇ 8	⬇ 4	⬇ 2	51.1		15.4	27.6
57	Wile E. Coyote	90424	⬆ 6	⬆ 3		⬇ 1			72.9	0.1	27.0
58	GIMPS.France	89835	⬇ 5	⬇ 4	⬇ 4			87.4	6.3	6.2
59	NUST	80146	⬆ 48	⬆ 9	⬆ 1		56.9	41.6	1.1	0.5
60	SASAKI	76350	⬇ 4	⬇ 1	⬇ 1		100.0
61	SHADO	72528	⬆ 1	⬆ 1					61.0	18.9	12.6	0.8
62	GIMPS China	70912	⬇ 4	⬆ 2	⬆ 1	⬆ 1	84.1		9.0	0.1	6.6
63	Eratosthenes Sieve	70723	⬆ 3		⬆ 2	⬇ 1	0.8		93.9	5.2
64	Net-Work	70608		⬆ 1	⬇ 2		6.4	1.2			81.0
65	Wisconsin	69444	⬇ 5	⬇ 4	⬇ 1		27.7		37.5	34.8
66	S147127	68532	⬆ 4				34.3		29.3	36.4
67	Team_Italia	66704	⬆ 8				3.3	0.5	66.0	21.6	5.2	1.8
68	ParadoxZ Commando	63687	⬆ 4	⬆ 1	⬆ 1	⬆ 1			72.3	27.7
69	Esperanto	63655	⬇ 1	⬆ 1	⬇ 1	⬇ 1		25.7	5.1	69.1
70	EgyptianPolymaths	52640	⬆ 4	⬆ 5				82.0
71	Cap'n Entropy's Cavalcade of Wonderment	51295	⬇ 6				67.2	9.2	19.4	4.2
72	Team Israel	45713	⬇ 3				96.8		2.7	0.6
73	AJ	45414	⬇ 2	⬆ 4	⬆ 1				74.1	25.9
74	Hungary	44558	⬆ 2	⬇ 1	⬆ 1				5.4	1.1	93.3
75	Brno University of Technology	44312	⬆ 2	⬆ 3	⬆ 2				80.3	19.7
76	One Man Team	42554	⬇ 63	⬇ 59					99.9
77	Aiblspitz	39659	⬆ 19	⬆ 8	⬆ 2			93.1		6.9
78	Team Belgium	38862	⬆ 3	⬆ 2			1.4	2.5	34.9	23.7	37.6
79	Turku	36285	⬆ 3	⬆ 3	⬆ 2				100.0
80	huskers-gimps	36272	⬆ 4	⬆ 1					76.7	23.3
81	Debian	32583	⬆ 5	⬆ 5	⬆ 1				98.2	1.8
82	Team H	32560	⬆ 3	⬆ 6	⬆ 2		14.1		85.3	0.6
83	Hermessz	31759	⬆ 4	⬆ 4			65.2		32.3	2.5
84	ᕙ(⇀‸↼‶)ᕗ	31559	⬆ 4	⬆ 5	⬆ 1		0.7		98.9	0.4
85	GIMPS.NEO	30131	⬇ 6	⬇ 1	⬆ 1				83.4	16.6
86	baraCUDA	29906	⬆ 3	⬆ 4	⬆ 1				100.0
87	MurrayInfoSys	28885	⬆ 7	⬆ 7	⬆ 1				68.4	31.6
88	The Fellowship of Infinity	28203	⬆ 5	⬆ 3	⬆ 2				99.6	0.4
89	HardOCP	26789	⬇ 6	⬆ 3	⬆ 2	⬆ 1			70.1	29.9
90	Team Viet Nam	26644	⬇ 10	⬇ 7	⬇ 1	⬇ 1	45.8		32.1	22.0
91	Channel 4	25517		⬆ 4	⬆ 1	⬆ 1			81.3	18.7
92	Small-Team-2000	24050	⬇ 2	⬆ 4	⬆ 2	⬆ 1				100.0
93	Smoke-it	23110	⬇ 53	⬇ 44	⬇ 20	⬇ 2	83.1	16.9
94	Costa Rica	22776	⬆ 1	⬇ 1	⬆ 1				80.5	19.0
95	BitMEX Research	22546	⬇ 34	⬇ 16	⬇ 2				86.2	13.8
96	socal_prime	20435	⬇ 4	⬆ 1					73.1	26.9
97	Georgia Tech	20319		⬆ 1					100.0
98	Com Systems (RU)	19841	⬆ 7	⬆ 1					71.4	28.6
99	randomteam	19223	⬇ 32	⬇ 25							100.0
100	LimePrime	17857	⬆ 4					0.9	88.8	10.4
101	GIMPS Romania	17483	⬆ 1	⬆ 1			73.6		23.5	3.0
102	Mensa	16458	⬆ 25	⬆ 26	⬆ 5	⬆ 2			64.9	35.1
103	RobotechResearch	16328	⬆ 7	⬆ 4		⬇ 1			48.9	51.1
104	A Single Engineer	16186	⬇ 6	⬇ 3	⬇ 2	⬇ 1			67.5	32.5
105	TurkishMath	15307	⬆ 3	⬆ 1	⬆ 1				94.9	5.1
106	PrimitiveRootsCircle	15047	⬇ 6	⬇ 1	⬇ 2		5.5		63.4	29.6	1.5
107	SpartaAlumni	14516	⬇ 6	⬇ 4	⬇ 2				76.0	24.0
108	moeses	13445	⬆ 1		⬆ 1				98.9	1.1
109	Team Retired	12964	⬇ 10	⬇ 5	⬇ 1				23.9	2.7
110	Portland State University	12011	⬆ 9	⬆ 7				34.9	62.6	2.5
111	FREE ROBUX	10852	⬆ 6	⬆ 1					100.0
112	Royal Military College of Canada	10691	⬆ 6	⬆ 3			89.7		7.9	2.4
113	Ozzie Prime	10625	⬇ 2	⬇ 2	⬆ 10				22.6	15.6		61.9
114	Team Finland	10609	⬆ 1	⬆ 2			1.5		96.0		2.5
115	University of Waterloo	10564	⬆ 6	⬆ 4					94.9	5.1
116	Quantus	10380	⬇ 3	⬇ 7	⬇ 3		11.7		15.2	12.2		60.9
117	The_Dude_Abides	10213	⬆ 38	⬆ 9	⬆ 3	⬆ 3			32.6	51.1	1.0
118	Prime Rib	9895	⬆ 14	⬇ 5		⬇ 1			98.3	1.7
119	Syntony	9613	⬆ 4	⬆ 1		⬇ 1				100.0
120	Team Slovenia	9438	⬇ 6	⬇ 6	⬇ 3	⬇ 1			66.2	33.7
121	LTT fans	9056	⬆ 5	⬆ 1			92.5				7.5
122	Nerdfighters for Mersenne Primes	9002	⬇ 10	⬇ 4					96.9	3.1
123	Arpan Sen Labs	8820	⬆ 18	⬆ 9	⬆ 3				59.9	40.0
124	Shaffer's Studio	8700	⬇ 2	⬇ 3					90.1	9.8
125	math.auth.gr	8551	⬆ 4	⬇ 1					100.0
126	Spain	8549	⬇ 20	⬇ 16	⬇ 10				73.4	26.6
127	JiBoTeam	8493	⬇ 2	⬆ 2	⬆ 2	⬆ 2				100.0
128	Pavlicin	8407	⬆ 2	⬇ 3	⬇ 1	⬇ 1	79.7	0.1	20.2
129	SETI.Germany	8265	⬇ 13	⬇ 6	⬇ 1	⬇ 1		11.5		88.5
130	FreeBSD	8180	⬆ 1	⬆ 1	⬆ 1				68.9	31.1
131	Morocco	7951	⬆ 15	⬆ 4	⬆ 1				62.5	37.5
132	Die Zeitfinder	7268	⬇ 4	⬇ 2	⬇ 2				89.3	10.7
133	GIMPS.Taiwan	7047	⬇ 9	⬆ 3					81.2	18.1	0.1
134	Granada	7040	⬇ 14	⬆ 4			28.9		22.6	48.5
135	Server66	6758	⬆ 17	⬇ 8			100.0
136	FactorMania	6572		⬆ 1				56.9			43.1
137	Abacus	6363	⬇ 3	⬇ 3		⬆ 1			98.8	1.2
138	Triangle	6360	⬇ 3	⬇ 5		⬇ 1			99.0	1.0
139	Korea.Prime	6327	⬆ 11	⬆ 3					75.0	25.0
140	Brasil	6024	⬇ 2	⬆ 3	⬆ 5				79.4	20.5
141	Team Christensen	5887	⬇ 2	⬇ 1	⬇ 1					100.0
142	teamMALI	5789	⬆ 11	⬆ 4	⬇ 1				82.5	17.5
143	irowiki	5594	⬇ 6	⬇ 4	⬇ 1					100.0
144	México mágico	5568	⬇ 4	⬇ 3	⬇ 1				85.3	14.6
145	Phi Kappa Theta	5449	⬆ 14	⬆ 6	⬆ 6	⬆ 5			76.6	23.4
146	KnightLight	4970	⬇ 2	⬇ 1		⬇ 1				100.0
147	DePaul MAT 141	4934	⬆ 7	⬆ 1	⬆ 1	⬇ 1			99.6	0.4
148	Crunching@EVGA	4888	⬆ 1	⬆ 1	⬆ 1	⬇ 1			99.7	0.3
149	Hong Kong GIMP	4766	⬇ 6	⬇ 5	⬇ 5	⬇ 1			67.2	32.8
150	YESHUA IS THE MESSIAH	4648	⬆ 1			⬇ 1			99.2	0.8
151	SETI.USA	4494	⬆ 68	⬆ 16	⬆ 2				57.0	43.0
152	Noam Karni Team	3702	⬆ 4	⬆ 2	⬆ 2				85.3	14.7
153	Team Norway	3494	⬇ 20	⬇ 1	⬇ 1		71.2			7.4	20.8
154	Politeknik Banting, Selangor	3279	⬆ 6	⬆ 1	⬆ 1		75.8		24.1	0.1
155	Olympic College	2823	⬆ 2	⬆ 1	⬆ 1					100.0
156	Pi Rho	2499	⬆ 9	⬆ 3	⬆ 1				67.1	32.9
157	GIMPS.Hong Kong	2406	⬆ 5		⬆ 6		2.3		34.8	62.9
158	GIMPSMalaysia	2394	⬆ 8	⬆ 2					66.8	33.2
159	CZAsTc	2288	⬆ 20	⬆ 2					99.6	0.4
160	The Planetary Society	2237	⬆ 59	⬆ 3					76.1	23.9
161	Team Austria	2199	⬆ 8	⬆ 3			12.8	9.5	77.7
162	GIMPS_KS	2199	⬆ 8	⬆ 3					36.5	62.0	1.4
163	Team Bulgaria	1955	⬆ 53	⬆ 18	⬆ 7				43.9	53.7	2.3
164	The Prime Pioneers	1919	⬆ 7	⬆ 4				100.0
165	Obsidian	1830	⬆ 12	⬆ 5	⬆ 7					100.0
166	Catalunya Team	1727	⬆ 53	⬆ 47	⬆ 2	⬆ 1			98.9	1.0
167	The Court of the Math Jester	1710	⬆ 52	⬆ 46	⬆ 2	⬆ 1			100.0
168	Hyperion	1638	⬇ 21	⬇ 6	⬇ 3	⬆ 1				33.3
169	zeit	1578	⬇ 5	⬇ 3	⬇ 3	⬆ 1	17.4			82.6
170	hreid	1575	⬆ 5	⬆ 2	⬆ 1	⬆ 1			100.0
171	cr_colorado	1549	⬆ 5	⬆ 2	⬆ 2	⬆ 1				100.0
172	I Love Canadian Natural Resources	1542	⬆ 6	⬆ 7	⬆ 2	⬆ 1				100.0
173	Vegan	1118	⬆ 29	⬆ 22	⬆ 2	⬆ 1			75.4	24.6
174	Amserver	1066	⬆ 45	⬆ 2	⬆ 2	⬆ 1	100.0
175	VRS_SE	1055	⬇ 8	⬇ 6	⬆ 2	⬆ 1			74.6	25.4
176	youngfun429	1037	⬆ 7	⬆ 2	⬆ 2	⬆ 1			75.3	24.7
177	Elisabeth-von-Thadden-Schule	1015	⬇ 35	⬇ 19	⬇ 10	⬇ 11			76.2	23.8
178	Therian Primes	1007	⬆ 7	⬆ 2	⬆ 1			14.6		52.4	33.0
179	Azerbaijan	861	⬆ 40	⬆ 34	⬆ 2					97.6	2.4
180	RafaÅ‚ HacuÅ›	860	⬆ 8	⬆ 2					100.0
181	Czech National Team	857	⬆ 5	⬆ 2	⬆ 1				96.7	0.2	1.8
182	Timesc	854	⬆ 37	⬆ 31	⬆ 1				100.0
183	UMD University of Maryland Prime Hunters	850	⬆ 36	⬆ 2	⬆ 1				100.0
184	AWC	801	⬆ 5	⬆ 2	⬆ 1				100.0
185	Weatopians	793	⬆ 7	⬆ 3	⬆ 1				99.7	0.3
186	Kabylie	685	⬇ 18	⬇ 11	⬆ 2		26.7			73.3
187	SGDynamo Dresden	579	⬆ 7	⬆ 3	⬆ 3		100.0
188	PARG team	563	⬆ 7	⬆ 1	⬆ 1	⬆ 1				96.2	3.8
189	Furry Primes	560	⬇ 26	⬇ 15	⬇ 2	⬇ 1	8.2			91.8
190	Denmark	554	⬆ 29	⬆ 23	⬆ 8					100.0
191	Join Us 😈	543	⬇ 9	⬇ 14			35.2			64.8
192	PrimeObsession	539	⬆ 4	⬇ 1						100.0
193	alan145	538	⬆ 17	⬆ 10	⬆ 1		31.0	17.4			51.6
194	Much prime! (wow)	532	⬆ 25	⬆ 19	⬆ 22					100.0
195	GIMPS.Romania	422	⬆ 3	⬇ 3					100.0
196	LIKN	285	⬆ 23	⬇ 3	⬆ 1	⬆ 1				99.9
197	Yurunago	276	⬆ 3	⬇ 3	⬆ 2	⬆ 1				100.0
198	Byberg Nordic Prime	265	⬆ 5	⬇ 2	⬆ 2	⬆ 1				100.0
199	FDY	265	⬆ 5	⬇ 2	⬆ 2	⬆ 1				100.0
200	TunisianTeam	258	⬇ 16	⬇ 2	⬆ 2	⬆ 1				100.0
201	Subprime Searches	256	⬆ 4	⬇ 2	⬆ 2	⬆ 1				100.0
202	MES-Team	248	⬇ 99	⬇ 49	⬇ 9	⬇ 6				100.0
203	miiro	240	⬆ 5	⬇ 1	⬆ 2		100.0
204	DividerHunt	221	⬆ 5		⬆ 2		100.0
205	/r/counting	184	⬆ 7	⬆ 1	⬆ 2
206	3DCenter.org	170	⬇ 25	⬇ 22	⬇ 10						100.0
207	GIMPS.Peace	122	⬆ 6	⬆ 2	⬆ 2	⬆ 1	44.7	55.3
208	His Dark Materials	111	⬇ 9	⬇ 3		⬆ 1					99.8
209	GIMPS Hams	107	⬇ 3	⬇ 9	⬇ 5	⬇ 2		100.0
210	sannerud.com	98	⬆ 5				47.6				10.9	41.5
211	Team Dominik Radler	46	⬇ 10	⬇ 4			100.0
212	GIMPS_IOM	38	⬇ 19	⬇ 4			100.0
213	yfinder	1	⬆ 5	⬇ 1	⬆ 1					100.0