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 2026-09-14 17:00 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	182260013	⬆ 2	⬆ 1				99.3		0.6
2	Slovakia	156658245	⬇ 1	⬆ 1			0.3	88.5	0.4	0.1	10.7
3	PrimeNet	151031011	⬆ 1	⬆ 1			0.2	80.1	0.6	0.8	18.3
4	GIMPS.Russia	144187818	⬇ 2	⬇ 3			0.9	0.1	0.3		98.7
5	POLAND	111549500					0.9	96.1	0.4	0.1	2.5
6	-Too many Ones-	67535645						78.4			21.6
7	Team#1	23007900	⬆ 1				1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20117496	⬇ 1				45.4	31.8	4.4	0.7	17.7
9	UCM-curtisc	12842449	⬆ 1	⬆ 1					99.2	0.8
10	Numberphile	12647780	⬆ 6	⬇ 1			3.3	18.2	4.8	1.7	71.9
11	Team-Deutschland	10975547					1.9	66.6	1.4	0.2	29.8
12	More Power!!!	8763189					18.0	73.6	3.4	3.1	1.8
13	Porta Kruse	6305067	⬆ 2	⬆ 1			2.0	0.5			91.1	6.2
14	TeamUK	6217354		⬇ 1			45.2	2.3	21.6	1.9	28.9
15	GW's legions	6163175	⬇ 6				0.1	1.9	89.5	4.1	4.3
16	GPU to 72	5989444	⬆ 1				42.6	38.3	2.3	3.1	13.5
17	tsc	3949995	⬆ 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	3363216	⬆ 1	⬆ 1			3.2	4.7	85.0	7.1
20	Argentina	2563445	⬆ 1	⬆ 1			92.1		7.9
21	GIMPS.Korea	1840720	⬆ 3	⬆ 2	⬆ 1		87.0	4.4	3.5	0.8	4.2
22	Wikipedia	1832373			⬇ 1		55.7	36.3	4.9	2.0	0.9
23	Dutch Power Cows	1321419	⬆ 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"	1012670	⬆ 10	⬆ 1			92.0		7.9	0.1
26	Swedes Of Primes	839917		⬇ 1			2.0	76.2	18.3	3.5
27	MBAi.Cloud	806305	⬆ 1	⬆ 1					99.9	0.1
28	MATHSareREAL	578886	⬆ 1	⬆ 2			96.2		2.5	1.3
29	GIMPS.USA	545257	⬆ 13	⬆ 2			37.0	39.2	17.8	3.6	2.0
30	Buhr	475019		⬆ 2			43.2	6.6	16.3	5.6	28.3
31	Colorado School of Mines	424402	⬆ 5	⬆ 2			81.9		16.6	1.4
32	citizenscience.ru	379803		⬆ 2	⬆ 1		86.8	0.8	7.9	1.0	3.5
33	MOXA	357244	⬆ 5	⬆ 2	⬆ 1		99.8		0.2
34	Rechenkraft.net	345420		⬆ 2	⬆ 1		0.1	51.2	5.0	7.3	36.3
35	SpongeBob SquarePants	328163	⬇ 12	⬇ 6	⬇ 3			32.5	64.1	3.4
36	S485122	302207	⬆ 3	⬆ 3				95.0		5.0
37	GIMPS.Japan	298460	⬇ 4	⬆ 1			44.7		40.2	14.8	0.3
38	Terry Kim Team	276063	⬇ 1	⬇ 1			94.5		4.1	0.9
39	nranks	262856	⬆ 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	215983					87.1		10.1	2.9
42	GIMPS Team Philippines	208262	⬆ 4	⬆ 1			46.5		10.7	2.1	36.3
43	unRAID	197731	⬇ 12	⬆ 13	⬆ 7			63.8	25.5	3.6	7.1
44	NerdyGirls	178258			⬇ 1			45.0	5.4	49.6
45	Team Tartan	161659	⬆ 3	⬆ 1	⬇ 1				77.5	22.5
46	Canada	156385	⬆ 1	⬇ 1	⬇ 1		9.0	0.8	64.7	25.5
47	GIMPS.Portugal	155241	⬆ 9		⬇ 1		49.3	49.2		1.4
48	IOTA	152254	⬆ 6	⬆ 1	⬇ 1		93.8		4.4	1.8
49	GIMPS.NZ	136848	⬆ 1	⬆ 2	⬇ 1		79.6	0.2	11.6	8.5	0.1
50	Team China	133636	⬆ 1	⬆ 2	⬇ 1		0.1		99.6	0.3
51	Unicamp	113082	⬆ 1	⬆ 2			69.4		28.6	2.0
52	VIPR	111804	⬆ 19	⬆ 3			96.4		2.1	1.3
53	UIUC	98420	⬆ 6	⬆ 4	⬆ 2				67.4	32.6
54	AMD Users	93075	⬆ 3	⬆ 4	⬆ 2		50.1	0.6	1.7	47.1	0.4
55	ComputerraRU	92245	⬆ 23	⬆ 20	⬆ 3		63.2		34.1	2.7
56	Wile E. Coyote	91298	⬆ 7	⬆ 4	⬆ 1	⬆ 1			73.1	0.1	26.8
57	GIMPS.France	89835	⬇ 4	⬇ 3	⬇ 3	⬆ 1		87.4	6.3	6.2
58	OverclockerAustralia	88098	⬇ 9	⬇ 10	⬇ 5	⬇ 2	49.9		15.8	28.2
59	NUST	80596	⬆ 48	⬆ 8	⬆ 1		57.1	41.3	1.0	0.5
60	SASAKI	76024	⬇ 5	⬇ 1	⬇ 1		100.0
61	SHADO	72232		⬆ 1					61.3	18.6	12.6	0.8
62	GIMPS China	70912	⬇ 4	⬆ 2	⬆ 2		84.1		9.0	0.1	6.6
63	Eratosthenes Sieve	70723	⬆ 2		⬇ 1		0.8		93.9	5.2
64	Net-Work	70380		⬆ 1	⬇ 1		6.4	1.2			80.9
65	Wisconsin	69243	⬇ 5	⬇ 4			27.5		37.6	34.9
66	S147127	69050	⬆ 4				34.0		30.2	35.8
67	Team_Italia	67813	⬆ 8	⬆ 1			3.2	0.5	66.2	21.6	5.1	1.8
68	ParadoxZ Commando	63690	⬆ 5	⬆ 1	⬆ 1				72.3	27.7
69	Esperanto	63372	⬇ 1	⬆ 1	⬇ 1			25.8	5.1	69.1
70	EgyptianPolymaths	52640	⬆ 4	⬆ 4				82.0
71	Cap'n Entropy's Cavalcade of Wonderment	51471	⬇ 5				67.3	9.1	19.4	4.2
72	AJ	45414		⬆ 4	⬆ 1	⬆ 1			74.1	25.9
73	Team Israel	45346	⬇ 4	⬇ 1	⬇ 1	⬇ 1	96.7		2.7	0.6
74	Brno University of Technology	45113	⬆ 3	⬆ 3					80.7	19.3
75	One Man Team	43398	⬇ 62	⬇ 58	⬆ 1				99.9
76	Hungary	40388		⬇ 3	⬇ 1				6.0	1.3	92.7
77	Aiblspitz	40040	⬆ 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	⬆ 1				100.0
80	huskers-gimps	36272	⬆ 4	⬆ 1	⬆ 1				76.7	23.3
81	Debian	32583	⬆ 4	⬆ 5	⬆ 1				98.2	1.8
82	Team H	32560	⬆ 5	⬆ 6	⬆ 2		14.1		85.3	0.6
83	Hermessz	31759	⬆ 5	⬆ 4			65.2		32.3	2.5
84	ᕙ(⇀‸↼‶)ᕗ	31562	⬆ 2	⬆ 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	28633	⬆ 7	⬆ 7	⬆ 1				69.0	31.0
88	The Fellowship of Infinity	28206	⬆ 4	⬆ 3	⬆ 2				99.6	0.4
89	HardOCP	26789	⬇ 6	⬆ 3	⬆ 2				70.1	29.9
90	Team Viet Nam	26644	⬇ 10	⬇ 7	⬇ 1		45.8		32.1	22.0
91	Channel 4	25517		⬆ 4	⬆ 1				81.3	18.7
92	Small-Team-2000	24050	⬇ 2	⬆ 1	⬆ 2					100.0
93	Costa Rica	23632	⬆ 2	⬆ 3	⬆ 2	⬆ 1			81.2	18.3
94	Smoke-it	21425	⬇ 54	⬇ 44	⬇ 17	⬇ 1	81.7	18.3
95	BitMEX Research	21000	⬇ 33	⬇ 16	⬇ 2				85.2	14.8
96	socal_prime	20435	⬇ 3	⬆ 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	⬇ 21							100.0
100	LimePrime	17857	⬆ 4					0.9	88.8	10.4
101	GIMPS Romania	17483	⬆ 1				73.6		23.5	3.0
102	Mensa	17293	⬆ 25	⬆ 26	⬆ 3				66.6	33.4
103	RobotechResearch	16328	⬆ 7	⬆ 4					48.9	51.1
104	A Single Engineer	16186	⬇ 6	⬇ 2	⬇ 2				67.5	32.5
105	TurkishMath	15307	⬆ 3	⬆ 1	⬆ 2				94.9	5.1
106	PrimitiveRootsCircle	15047	⬇ 6	⬇ 1	⬇ 2		5.5		63.4	29.6	1.5
107	SpartaAlumni	14516	⬇ 6	⬇ 4	⬇ 1				76.0	24.0
108	moeses	13443	⬆ 1		⬆ 1				98.9	1.0
109	Team Retired	12940	⬇ 10	⬇ 5	⬇ 1				23.9	2.7
110	Portland State University	12011	⬆ 9	⬆ 7				34.9	62.6	2.5
111	FREE ROBUX	10852	⬆ 5	⬆ 1					100.0
112	Royal Military College of Canada	10691	⬆ 5	⬆ 3			89.7		7.9	2.4
113	Ozzie Prime	10625	⬇ 2	⬇ 2	⬆ 10				22.6	15.6		61.9
114	Team Finland	10609	⬆ 4	⬆ 2			1.5		96.0		2.5
115	University of Waterloo	10564	⬆ 6	⬆ 7					94.9	5.1
116	The_Dude_Abides	10501	⬆ 37	⬆ 11	⬆ 2				31.7	52.3	0.9
117	Quantus	10380	⬇ 4	⬇ 8	⬇ 4		11.7		15.2	12.2		60.9
118	Prime Rib	9895	⬆ 14	⬇ 5	⬆ 1				98.3	1.7
119	Team Slovenia	9441	⬇ 5	⬇ 5	⬇ 2				66.2	33.8
120	Syntony	9366	⬆ 5	⬇ 1						100.0
121	LTT fans	9056	⬆ 5				92.5				7.5
122	Nerdfighters for Mersenne Primes	9002	⬇ 10	⬇ 4					96.9	3.1
123	Arpan Sen Labs	8824	⬆ 18	⬆ 8	⬆ 3				59.9	40.1
124	Shaffer's Studio	8696	⬇ 2	⬇ 4					90.1	9.8
125	math.auth.gr	8551	⬆ 4	⬇ 1					100.0
126	JiBoTeam	8493	⬇ 2	⬇ 1	⬆ 3	⬆ 1				100.0
127	Pavlicin	8407	⬆ 3	⬇ 1		⬆ 1	79.7	0.1	20.2
128	Spain	8302	⬇ 22	⬇ 18	⬇ 12	⬇ 2			75.6	24.4
129	SETI.Germany	8265	⬇ 14	⬇ 6	⬇ 1			11.5		88.5
130	FreeBSD	8180	⬆ 1	⬆ 5					68.9	31.1
131	Morocco	7951	⬆ 14	⬆ 3	⬆ 1				62.5	37.5
132	Die Zeitfinder	7268	⬇ 4	⬇ 2	⬇ 1				89.3	10.7
133	GIMPS.Taiwan	7047	⬇ 10	⬆ 3					81.2	18.1	0.1
134	Granada	7040	⬇ 14	⬆ 4			28.9		22.6	48.5
135	Server66	6758	⬆ 14	⬇ 6			100.0
136	FactorMania	6572		⬆ 1				56.9			43.1
137	Abacus	6363	⬇ 3	⬇ 4					98.8	1.2
138	Triangle	6360	⬇ 3	⬇ 6					99.0	1.0
139	Korea.Prime	6327	⬆ 12	⬆ 3					75.0	25.0
140	Brasil	6028	⬇ 2	⬆ 3	⬆ 5				79.3	20.5
141	Team Christensen	5887	⬇ 2	⬇ 1	⬇ 1					100.0
142	teamMALI	5789	⬆ 12	⬆ 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	⬆ 5				76.6	23.4
146	KnightLight	4970	⬇ 2	⬇ 1						100.0
147	DePaul MAT 141	4934	⬆ 8	⬆ 1					99.6	0.4
148	Crunching@EVGA	4888	⬆ 2	⬆ 1					99.7	0.3
149	Hong Kong GIMP	4766	⬇ 6	⬇ 5	⬇ 5				67.2	32.8
150	YESHUA IS THE MESSIAH	4648	⬆ 2		⬇ 1				99.2	0.8
151	SETI.USA	4495	⬆ 68	⬆ 15					57.0	43.0
152	Noam Karni Team	3702	⬆ 4	⬆ 2					85.3	14.7
153	Team Norway	3477	⬇ 20	⬇ 1			71.5			7.4	20.4
154	Politeknik Banting, Selangor	3279	⬆ 6	⬆ 1			75.8		24.1	0.1
155	Olympic College	2823	⬆ 2	⬆ 1						100.0
156	Team Bulgaria	2813	⬆ 60	⬆ 25	⬆ 7	⬆ 7			61.0	37.3	1.6
157	Pi Rho	2499	⬆ 8	⬆ 1	⬇ 1	⬇ 1			67.1	32.9
158	GIMPS.Hong Kong	2406	⬆ 6	⬇ 1	⬆ 4	⬇ 1	2.3		34.8	62.9
159	GIMPSMalaysia	2394	⬆ 7		⬇ 2	⬇ 1			66.8	33.2
160	CZAsTc	2288	⬆ 19		⬇ 2	⬇ 1			99.6	0.4
161	The Planetary Society	2237	⬆ 58		⬇ 2	⬇ 1			76.1	23.9
162	Team Austria	2199	⬆ 7		⬇ 2	⬇ 1	12.8	9.5	77.7
163	GIMPS_KS	2199	⬆ 7		⬇ 2	⬇ 1			36.5	62.0	1.4
164	The Prime Pioneers	1919	⬆ 7	⬆ 3				100.0
165	Obsidian	1830	⬆ 12	⬆ 4	⬆ 6					100.0
166	Catalunya Team	1727	⬆ 53	⬆ 47	⬆ 1				98.9	1.0
167	The Court of the Math Jester	1710	⬆ 52	⬆ 46	⬆ 1				100.0
168	Hyperion	1598	⬇ 21	⬇ 4	⬇ 3					34.2
169	zeit	1578	⬇ 7	⬇ 4			17.4			82.6
170	hreid	1575	⬆ 5	⬆ 2					100.0
171	cr_colorado	1549	⬆ 5	⬆ 2	⬆ 1					100.0
172	I Love Canadian Natural Resources	1542	⬆ 6	⬆ 7	⬆ 1					100.0
173	Vegan	1118	⬆ 28	⬆ 22	⬆ 1				75.4	24.6
174	Amserver	1066	⬆ 45	⬆ 1	⬆ 1		100.0
175	VRS_SE	1055	⬇ 8	⬇ 7	⬆ 1				74.6	25.4
176	youngfun429	1037	⬆ 7	⬆ 2	⬆ 1				75.3	24.7
177	Elisabeth-von-Thadden-Schule	1015	⬇ 35	⬇ 7	⬇ 11				76.2	23.8
178	Therian Primes	1007	⬆ 7	⬆ 2				14.6		52.4	33.0
179	Azerbaijan	861	⬆ 40	⬆ 34						97.6	2.4
180	RafaÅ‚ HacuÅ›	860	⬆ 8	⬆ 2					100.0
181	Czech National Team	857	⬆ 5	⬆ 2					96.7	0.2	1.8
182	Timesc	854	⬆ 37	⬆ 31					100.0
183	UMD University of Maryland Prime Hunters	850	⬆ 36	⬆ 1					100.0
184	AWC	801	⬆ 5	⬆ 2					100.0
185	Weatopians	793	⬆ 7	⬆ 3					99.7	0.3
186	Kabylie	670	⬇ 18	⬇ 9			25.1			74.9
187	SGDynamo Dresden	579	⬆ 7	⬆ 3	⬆ 2		100.0
188	PARG team	563	⬆ 7	⬆ 1						96.2	3.8
189	Furry Primes	560	⬇ 26	⬇ 15	⬇ 2		8.2			91.8
190	Denmark	554	⬆ 29	⬆ 23	⬆ 7					100.0
191	Join Us 😈	543	⬇ 9	⬇ 15	⬇ 1		35.2			64.8
192	PrimeObsession	539	⬆ 4	⬇ 1	⬇ 1					100.0
193	alan145	538	⬆ 17	⬆ 10	⬇ 1		31.0	17.4			51.6
194	Much prime! (wow)	532	⬆ 25	⬆ 19	⬆ 20					100.0
195	GIMPS.Romania	422	⬆ 3	⬇ 3	⬇ 2				100.0
196	LIKN	285	⬆ 23	⬇ 3						99.9
197	Yurunago	276	⬆ 3	⬇ 3	⬆ 1					100.0
198	Byberg Nordic Prime	265	⬆ 4	⬇ 2	⬆ 1					100.0
199	FDY	265	⬆ 4	⬇ 2	⬆ 1					100.0
200	TunisianTeam	258	⬇ 16	⬇ 2	⬆ 1					100.0
201	Subprime Searches	256	⬆ 3	⬇ 2	⬆ 1					100.0
202	miiro	240	⬆ 6		⬆ 1		100.0
203	DividerHunt	221	⬆ 6	⬆ 1	⬆ 2		100.0
204	/r/counting	184	⬆ 8	⬆ 2	⬆ 2
205	3DCenter.org	143	⬇ 24	⬇ 20	⬇ 10						100.0
206	GIMPS.Peace	122	⬆ 7	⬆ 3	⬆ 2		44.7	55.3
207	His Dark Materials	111	⬇ 8	⬇ 2							99.8
208	GIMPS Hams	107	⬇ 3	⬇ 8	⬇ 4			100.0
209	sannerud.com	98	⬆ 6	⬆ 1			47.6				10.9	41.5
210	Team Dominik Radler	46	⬇ 4	⬇ 3			100.0
211	GIMPS_IOM	19	⬇ 18	⬇ 3			100.0
212	yfinder	1	⬆ 6							100.0