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 2026-10-11 16:00 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	195768996	⬆ 3					99.4		0.6
2	Slovakia	159541492	⬇ 1				0.3	88.4	0.4	0.1	10.8
3	PrimeNet	151881184					0.2	80.2	0.6	0.8	18.2
4	GIMPS.Russia	140315824	⬇ 2				1.0	0.1	0.3		98.7
5	-Too many Ones-	69102463	⬆ 1	⬆ 1				78.8			21.1
6	POLAND	68648392	⬇ 1	⬇ 1			1.5	93.9	0.6	0.1	3.9
7	Team#1	23007900					1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20078568					42.1	32.6	4.7	0.7	19.8
9	UCM-curtisc	13114929	⬆ 1						99.2	0.8
10	Numberphile	12667969	⬆ 2				3.2	18.4	4.8	1.9	71.7
11	Team-Deutschland	10886153					1.6	67.8	2.0	0.3	28.2
12	More Power!!!	8389616	⬆ 1				18.2	72.9	3.7	3.3	2.0
13	GW's legions	6259552	⬇ 4	⬆ 2	⬆ 1		0.1	1.7	89.9	4.2	4.0
14	Porta Kruse	6243138	⬆ 1	⬇ 1	⬇ 1		2.0	0.5			91.1	6.3
15	GPU to 72	6078886	⬆ 2	⬆ 1	⬆ 1		42.1	39.7	3.0	3.0	11.9
16	TeamUK	6012478	⬇ 2	⬇ 2	⬇ 1		44.6	1.9	22.2	2.1	29.3
17	tsc	3938053	⬆ 1				55.4	1.6	0.9	0.3	41.8
18	UW Eau Claire	3654141	⬆ 1				91.1		6.5	2.4
19	UKRAINE	3584941	⬆ 1				1.2	5.6	87.1	6.2
20	Argentina	2563445	⬆ 1				92.1		7.9
21	NetBSD	2290706	⬆ 193	⬆ 193	⬆ 36			5.4			94.6
22	GIMPS.Korea	2003898	⬆ 1		⬇ 1		87.1	4.3	3.3	0.7	4.5
23	Wikipedia	1737475	⬇ 1	⬇ 2	⬇ 1		53.5	38.2	5.2	2.0	0.9
24	Dutch Power Cows	1286965	⬆ 3	⬇ 1	⬇ 1		28.9	7.3	1.2	2.0	60.6
25	404 - "Primes not Found"	1088991	⬆ 4				90.2		9.7	0.1
26	MBAi.Cloud	805731	⬆ 2	⬆ 1					99.9	0.1
27	Swedes Of Primes	747962	⬇ 1	⬇ 1			2.2	76.3	17.8	3.7
28	GIMPS.USA	614240	⬆ 4	⬆ 1			42.2	34.8	17.5	3.6	1.8
29	MATHSareREAL	560335	⬆ 1	⬇ 1			96.4		2.4	1.2
30	unRAID	512052	⬆ 10	⬆ 13	⬆ 2			88.6	7.4	1.3	2.8
31	Buhr	466129		⬇ 1	⬇ 1		39.9	7.4	16.1	5.9	30.7
32	citizenscience.ru	445299	⬆ 1		⬇ 1		69.0	0.2	7.3	0.9	22.7
33	Colorado School of Mines	428044	⬆ 1	⬇ 2			81.2		17.1	1.6
34	MOXA	359672	⬆ 4				100.0
35	GIMPS.Occitania	352993	⬇ 10	⬇ 11	⬇ 11			16.3				83.7
36	Rechenkraft.net	343715	⬇ 1	⬇ 1	⬇ 1			51.3	5.3	7.2	36.2
37	S485122	301333	⬆ 2	⬇ 1	⬇ 1			95.0		5.0
38	nranks	294579	⬆ 5	⬆ 1			25.6	0.4	2.2	0.3	71.6
39	GIMPS.Japan	289909	⬇ 2	⬇ 2	⬇ 2		46.1		39.5	14.1	0.3
40	NanJing Tech	237582	⬆ 4				22.1		67.3	10.4
41	Terry Kim Team	232382	⬇ 5	⬇ 3	⬇ 2		93.9		4.6	1.1
42	GIMPS Team Philippines	210148	⬆ 3		⬇ 1		46.1		10.6	2.2	36.5
43	YahsTeam	205272	⬇ 2	⬇ 2	⬇ 1		85.7		11.1	3.3
44	IOTA	160118	⬆ 9	⬆ 4	⬇ 1		93.0		4.7	2.3
45	GIMPS.Portugal	159795	⬆ 14	⬆ 2	⬇ 1		50.7	47.8		1.4
46	Team Tartan	153888	⬆ 2	⬇ 1					77.6	22.4
47	NerdyGirls	151708	⬇ 1	⬇ 3	⬇ 2			43.6	5.5	50.9
48	Canada	148118	⬇ 1	⬇ 2	⬇ 1		9.5	0.4	64.7	25.4
49	GIMPS.NZ	137811	⬆ 1		⬇ 1		78.9	0.2	13.0	7.9	0.1
50	Team China	131041	⬆ 1		⬇ 1		0.3		99.4	0.3
51	ComputerraRU	128678	⬆ 27	⬆ 7	⬇ 1		76.0		22.1	1.9
52	VIPR	112994	⬆ 6		⬇ 1		96.7		2.1	1.0
53	Wile E. Coyote	99786	⬆ 9	⬆ 4	⬆ 1				68.7	0.1	31.2
54	GIMPS.France	99119		⬆ 2	⬇ 1		1.1	87.6	5.7	4.0	1.5
55	UIUC	97856	⬆ 2	⬇ 2		⬆ 1			67.9	32.1
56	Unicamp	97112	⬇ 4	⬇ 5	⬇ 4	⬇ 1	68.9		30.8	0.3
57	AMD Users	93331	⬇ 2	⬇ 2	⬇ 1		50.0	0.6	0.9	48.1	0.4
58	NUST	92763	⬆ 22	⬆ 1			56.2	42.4	0.9	0.5
59	SHADO	77283	⬆ 1	⬆ 2					63.9	17.3	11.8	0.8
60	Eratosthenes Sieve	71337	⬆ 5	⬆ 2	⬆ 1				93.6	6.3
61	GIMPS China	70111	⬆ 2	⬆ 2	⬇ 1		85.2		9.1	0.1	5.4
62	SASAKI	69713	⬇ 6	⬇ 2			100.0
63	Net-Work	68359	⬆ 1	⬆ 1			6.6	1.2		0.8	78.6
64	S147127	66327	⬆ 3	⬆ 2		⬆ 1	33.3		33.9	32.8
65	Team_Italia	66218	⬆ 8	⬆ 2		⬇ 1	3.5	0.5	64.3	23.0	6.2	0.9
66	ParadoxZ Commando	64230	⬆ 4	⬆ 2	⬆ 2				72.0	28.0
67	Esperanto	62847	⬆ 1	⬆ 2				25.7	5.2	69.1
68	Wisconsin	61450	⬇ 7	⬇ 3	⬇ 2		22.7		41.1	36.2
69	EgyptianPolymaths	50998	⬆ 6	⬆ 1				79.4
70	Cap'n Entropy's Cavalcade of Wonderment	48382	⬇ 1	⬆ 1	⬆ 2		64.5	9.4	21.6	4.5
71	AJ	47544	⬆ 3	⬆ 2					74.6	25.4
72	Aiblspitz	41868	⬆ 19	⬆ 5	⬆ 1			93.4		6.6
73	Brno University of Technology	40456	⬆ 4	⬆ 2	⬆ 1				75.7	24.2
74	Hungary	40026	⬆ 2		⬆ 3				6.1	0.6	93.2
75	One Man Team	39556	⬇ 59	⬆ 1					99.9
76	Team Belgium	38774	⬆ 3	⬆ 2	⬆ 2		1.3	2.5	36.0	22.5	37.7
77	Team Israel	38083	⬇ 5	⬇ 5	⬇ 1		93.8		5.5	0.7
78	Turku	36285	⬆ 4	⬆ 1	⬆ 1				100.0
79	ᕙ(⇀‸↼‶)ᕗ	33674	⬆ 10	⬆ 5	⬆ 2		0.6		98.9	0.5
80	huskers-gimps	33170	⬆ 3						74.4	25.6
81	Hermessz	32997	⬆ 7	⬆ 2	⬆ 1		64.0		33.6	2.4
82	Team H	31281	⬆ 3	⬇ 1	⬆ 1		15.0		84.4	0.5
83	Debian	30222	⬆ 4	⬇ 1	⬆ 3	⬆ 1			98.1	1.9
84	MurrayInfoSys	30139	⬆ 11	⬆ 4	⬆ 1	⬇ 1			71.2	28.8
85	baraCUDA	29906	⬆ 5	⬆ 2	⬆ 2				100.0
86	Mensa	26992	⬆ 42	⬆ 18	⬆ 5				73.4	26.6
87	HardOCP	26543	⬇ 1	⬆ 4	⬆ 2				71.4	28.6
88	GIMPS.NEO	26118	⬇ 7	⬇ 2					84.6	15.4
89	OverclockerAustralia	25259	⬇ 40	⬇ 35	⬇ 5					78.7
90	The Fellowship of Infinity	25130	⬆ 2	⬇ 1					99.5	0.5
91	Channel 4	24726	⬆ 2	⬆ 1	⬆ 1				80.7	19.3
92	Small-Team-2000	23996	⬆ 2	⬆ 1	⬆ 1	⬆ 1				99.5	0.5
93	Costa Rica	23808	⬆ 3	⬆ 1	⬆ 1	⬇ 1			84.5	15.0
94	Team Viet Nam	20757	⬇ 10	⬇ 4	⬆ 1		58.8		22.6	18.6
95	Georgia Tech	20319	⬆ 3	⬆ 2	⬆ 1				100.0
96	randomteam	19223	⬇ 30	⬆ 3	⬆ 2						100.0
97	Com Systems (RU)	19059	⬆ 6	⬆ 1					70.2	29.8
98	socal_prime	17609	⬇ 1	⬇ 2	⬆ 1				71.5	28.5
99	GIMPS Romania	17483	⬆ 3	⬆ 2	⬆ 1		73.6		23.5	3.0
100	SpartaAlumni	17285	⬆ 5	⬆ 7	⬆ 1				64.0	36.0
101	RobotechResearch	16613	⬆ 7	⬆ 1	⬆ 2	⬆ 1			48.0	52.0
102	A Single Engineer	16025	⬇ 1	⬆ 1	⬆ 2	⬆ 2			73.3	26.7
103	LimePrime	15875	⬇ 4	⬇ 3	⬇ 1	⬇ 2			90.0	10.0
104	TurkishMath	15378	⬆ 2	⬆ 1	⬆ 1	⬇ 1			94.9	5.1
105	PrimitiveRootsCircle	15087	⬇ 1	⬆ 1	⬆ 1		4.1		66.5	28.1	1.3
106	Prime Rib	13798	⬆ 31	⬆ 14	⬆ 2				98.4	1.6
107	moeses	13464	⬆ 2	⬆ 1					99.0	1.0
108	The_Dude_Abides	12559	⬆ 23	⬆ 11	⬆ 2				26.5	59.0	0.8
109	Portland State University	11931	⬆ 3	⬆ 1				32.2	63.0	4.7
110	GIMPS.Taiwan	11405	⬆ 25	⬆ 23	⬆ 5				88.3	11.2	0.1
111	FREE ROBUX	10852	⬆ 3						100.0
112	Royal Military College of Canada	10691	⬆ 5				89.7		7.9	2.4
113	University of Waterloo	9840	⬆ 5	⬆ 2	⬆ 1	⬆ 1			94.5	5.5
114	Ozzie Prime	9827	⬇ 3	⬇ 1	⬇ 1	⬇ 1			16.3	16.8		66.9
115	Morocco	9582	⬆ 30	⬆ 17	⬆ 7				68.8	31.2
116	Team Retired	9250	⬇ 16	⬇ 7						1.0
117	Syntony	9135	⬆ 4		⬆ 1					100.0
118	Arpan Sen Labs	9118	⬆ 18	⬆ 5	⬆ 2				58.0	42.0
119	LTT fans	9056	⬆ 3	⬆ 2	⬆ 2		92.5				7.5
120	Shaffer's Studio	8682		⬆ 4	⬇ 3				90.4	9.4
121	Team Slovenia	8664	⬇ 6	⬇ 3	⬆ 2				63.4	36.6
122	math.auth.gr	8551	⬆ 4	⬆ 3	⬆ 3				100.0
123	Pavlicin	8407	⬆ 4	⬆ 4	⬆ 3		79.7	0.1	20.2
124	Team Finland	8337	⬇ 5	⬇ 10	⬇ 5		2.7		94.1		3.2
125	JiBoTeam	8318		⬆ 4	⬆ 2					100.0
126	FreeBSD	8244	⬆ 3	⬆ 4	⬆ 2				69.1	30.9
127	Nerdfighters for Mersenne Primes	8230	⬇ 14	⬇ 5	⬆ 2				96.6	3.4
128	SETI.USA	7567	⬆ 86	⬆ 23	⬆ 11	⬆ 2			67.0	33.0
129	Spain	7524	⬇ 22	⬇ 3	⬆ 1	⬇ 1			73.1	26.9
130	Die Zeitfinder	7337	⬇ 7	⬆ 1	⬆ 1	⬇ 1			89.4	10.6
131	SETI.Germany	7260	⬇ 1	⬇ 3	⬆ 1					100.0
132	México mágico	7231	⬆ 11	⬆ 12	⬆ 1				88.7	11.3
133	Granada	6899	⬇ 9	⬆ 1	⬆ 1		31.2		23.0	45.7
134	Server66	6758	⬇ 2	⬆ 1	⬆ 1		100.0
135	FactorMania	6572	⬆ 3	⬆ 1	⬆ 1			56.9			43.1
136	Triangle	6404	⬇ 2	⬆ 1	⬆ 1				98.8	1.2
137	Korea.Prime	6335	⬆ 7	⬆ 2	⬆ 1				74.9	25.1
138	irowiki	6116	⬆ 4	⬆ 5	⬆ 2	⬆ 1				100.0
139	Team Bulgaria	6074	⬆ 44	⬆ 24	⬆ 2	⬆ 1			68.3	30.9	0.7
140	The Court of the Math Jester	6039	⬆ 74	⬆ 29	⬆ 6	⬆ 1	5.5		85.3	9.1
141	Brasil	6005	⬇ 2		⬆ 1	⬆ 1			79.6	20.2
142	Team Christensen	5926	⬇ 1	⬇ 2	⬆ 1	⬇ 4				100.0
143	Abacus	5573	⬇ 10	⬇ 5	⬆ 2				98.8	1.2
144	Phi Kappa Theta	5545	⬆ 11	⬆ 6					75.3	24.7
145	SpongeBob SquarePants	5394	⬇ 121	⬇ 112	⬇ 75				60.0	40.0
146	KnightLight	4941			⬆ 1					100.0
147	DePaul MAT 141	4934	⬆ 1		⬆ 1				99.6	0.4
148	Crunching@EVGA	4888	⬆ 1		⬆ 1				99.7	0.3
149	teamMALI	4762	⬆ 4	⬇ 7	⬆ 2	⬆ 1			84.0	16.0
150	Politeknik Banting, Selangor	4655	⬆ 7	⬆ 4		⬇ 1	100.0
151	YESHUA IS THE MESSIAH	4648	⬇ 1	⬇ 2	⬆ 1				99.2	0.8
152	Hong Kong GIMP	4519		⬇ 7	⬆ 1				70.9	29.1
153	BitMEX Research	3911	⬇ 82	⬇ 58	⬇ 29				100.0
154	Catalunya Team	3707	⬆ 60	⬆ 13	⬆ 2				91.8	8.2
155	Noam Karni Team	3702	⬇ 1	⬇ 3	⬇ 1				85.3	14.7
156	Team Norway	2935	⬇ 16	⬇ 3	⬆ 1		70.8			8.8	19.6
157	Denmark	2800	⬆ 57	⬆ 33	⬆ 12				60.5	39.5
158	Quantus	2773	⬇ 48	⬇ 42	⬇ 3		43.8		28.8	27.4
159	Pi Rho	2499	⬆ 2	⬇ 3	⬇ 1				67.1	32.9
160	GIMPSMalaysia	2394	⬆ 2	⬇ 2	⬇ 1				66.8	33.2
161	GIMPS.Hong Kong	2384	⬇ 1	⬇ 4	⬇ 1		1.5		35.1	63.4
162	cr_colorado	2344	⬆ 12	⬆ 10	⬇ 1					100.0
163	CZAsTc	2288	⬆ 1	⬇ 4	⬇ 1				99.6	0.4
164	The Planetary Society	2237	⬆ 50	⬇ 4	⬇ 1				76.1	23.9
165	Team Austria	2199		⬇ 4	⬇ 1		12.8	9.5	77.7
166	GIMPS_KS	2199		⬇ 4	⬇ 1				36.5	62.0	1.4
167	Olympic College	2074	⬇ 9	⬇ 12	⬇ 1					100.0
168	Azerbaijan	1999	⬆ 46	⬆ 11	⬆ 9	⬆ 8			42.9	56.1	1.0
169	The Prime Pioneers	1919	⬆ 1	⬇ 5	⬇ 2	⬇ 1		100.0
170	alan145	1888	⬆ 39	⬆ 23	⬆ 4	⬇ 1	76.4	8.2			14.7
171	Subprime Searches	1756	⬆ 28	⬆ 31	⬆ 11	⬇ 1	85.4			14.6
172	Timesc	1711	⬆ 42	⬆ 10	⬇ 4	⬇ 1			100.0
173	Obsidian	1579	⬆ 2	⬇ 8	⬇ 2	⬇ 1				100.0
174	I Love Canadian Natural Resources	1542	⬆ 2	⬇ 1	⬇ 1	⬇ 1				100.0
175	Vegan	1384	⬆ 21	⬇ 1		⬇ 1			60.9	39.1
176	zeit	1283	⬇ 13	⬇ 6		⬇ 1	17.8			82.2
177	Amserver	1066	⬆ 1	⬇ 2	⬆ 1		100.0
178	youngfun429	1037	⬆ 2	⬇ 1	⬆ 1				75.3	24.7
179	Elisabeth-von-Thadden-Schule	1015	⬇ 28	⬇ 13	⬆ 1				76.2	23.8
180	Therian Primes	1007	⬆ 2	⬇ 2	⬆ 1			14.6		52.4	33.0
181	RafaÅ‚ HacuÅ›	860	⬆ 4	⬇ 1	⬆ 2				100.0
182	Czech National Team	857	⬆ 2	⬇ 1	⬆ 2				96.7	0.2	1.8
183	UMD University of Maryland Prime Hunters	850	⬆ 31		⬆ 2				100.0
184	PARG team	838	⬆ 7	⬆ 5	⬆ 2					97.4	2.6
185	AWC	801	⬆ 1	⬇ 1	⬆ 2				100.0
186	hreid	799	⬇ 13	⬇ 15	⬇ 14				100.0
187	VRS_SE	794	⬇ 18	⬇ 11	⬆ 1				99.0	1.0
188	Hyperion	642	⬇ 32	⬇ 20	⬆ 1					6.3
189	SGDynamo Dresden	579	⬆ 1	⬇ 1	⬆ 1		100.0
190	Join Us 😈	543	⬇ 11	⬆ 1	⬆ 1		35.2			64.8
191	PrimeObsession	539	⬆ 1	⬆ 1	⬆ 1					100.0
192	Much prime! (wow)	532	⬆ 22	⬆ 2	⬆ 1					100.0
193	Furry Primes	514	⬇ 25	⬇ 6	⬆ 1					100.0
194	GIMPS.Romania	422	⬇ 1	⬆ 1	⬆ 1				100.0
195	Kabylie	311	⬇ 28	⬇ 9	⬆ 1		19.6			80.4
196	LIKN	285	⬆ 18	⬆ 1	⬆ 1					99.9
197	Yurunago	276	⬇ 2	⬆ 1	⬆ 1					100.0
198	Byberg Nordic Prime	265	⬇ 1	⬆ 1	⬆ 1					100.0
199	FDY	265	⬇ 1	⬆ 1	⬆ 1					100.0
200	TunisianTeam	258	⬇ 19	⬆ 1	⬆ 1					100.0
201	miiro	240	⬆ 1	⬆ 2	⬆ 1		100.0
202	/r/counting	184	⬆ 6	⬆ 4	⬆ 2
203	DividerHunt	153	⬆ 2	⬆ 1			100.0
204	GIMPS.Peace	122	⬆ 6	⬆ 4	⬆ 1		44.7	55.3
205	sannerud.com	110	⬆ 6	⬆ 5	⬆ 1		42.4				20.7	36.9
206	Optimists Prime	54	⬆ 8	⬆ 8	⬆ 1			100.0
207	Team Dominik Radler	46	⬇ 1	⬆ 4	⬆ 2		100.0
208	His Dark Materials	25	⬇ 14	⬆ 1							100.0
209	GIMPS_IOM	19	⬇ 5	⬆ 3	⬆ 1		100.0
210	yfinder	0	⬆ 3	⬆ 3	⬆ 2					100.0