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 2026-10-04 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	193757859	⬆ 3					99.4		0.6
2	Slovakia	159445498	⬇ 1				0.3	88.5	0.4	0.1	10.7
3	PrimeNet	151647942					0.2	80.2	0.6	0.8	18.2
4	GIMPS.Russia	141423729	⬇ 2				1.0	0.1	0.3		98.7
5	-Too many Ones-	68751779	⬆ 1	⬆ 1	⬆ 1			78.8			21.2
6	POLAND	68680034	⬇ 1	⬇ 1	⬇ 1		1.5	93.8	0.6	0.1	3.9
7	Team#1	23007900					1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20217463					43.4	32.1	4.6	0.7	19.2
9	UCM-curtisc	13045950	⬆ 1	⬆ 1					99.2	0.8
10	Numberphile	12638553	⬆ 2	⬇ 1			3.0	18.4	4.8	1.8	71.9
11	Team-Deutschland	10964278					1.6	67.3	1.8	0.3	28.8
12	More Power!!!	8453492	⬆ 1				18.1	73.0	3.6	3.2	1.9
13	Porta Kruse	6287218	⬆ 2				2.0	0.5			91.1	6.2
14	GW's legions	6242217	⬇ 5	⬆ 1			0.1	1.8	89.8	4.2	4.0
15	TeamUK	6092153	⬇ 1	⬇ 1			44.8	2.1	22.0	2.0	29.0
16	GPU to 72	6020814	⬆ 1				42.8	38.7	2.9	3.0	12.4
17	tsc	3932592	⬆ 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	3534317	⬆ 1				1.8	5.3	86.4	6.4
20	Argentina	2563445	⬆ 1				92.1		7.9
21	GIMPS.Korea	1962317	⬆ 2	⬆ 1			87.0	4.3	3.3	0.7	4.5
22	Wikipedia	1765305		⬇ 1			54.2	37.7	5.0	2.0	0.9
23	Dutch Power Cows	1286614	⬆ 4	⬆ 1			29.0	7.3	1.2	1.8	60.7
24	GIMPS.Occitania	1185058	⬆ 1	⬇ 1				4.5				95.5
25	404 - "Primes not Found"	1051190	⬆ 5				89.9		10.1	0.1
26	MBAi.Cloud	799965	⬆ 2	⬆ 1					99.9	0.1
27	Swedes Of Primes	768902	⬇ 1	⬇ 1			2.2	76.5	17.6	3.7
28	GIMPS.USA	592247	⬆ 4	⬆ 1	⬆ 1		40.9	36.1	17.4	3.6	1.8
29	MATHSareREAL	564697		⬇ 1	⬇ 1		96.4		2.4	1.2
30	Buhr	475752	⬆ 1				41.6	7.0	16.1	5.8	29.5
31	citizenscience.ru	443247	⬆ 2	⬆ 2	⬆ 1		68.5	0.2	7.5	0.9	22.9
32	unRAID	438244	⬆ 8	⬆ 18	⬆ 1			86.3	9.0	1.5	3.2
33	Colorado School of Mines	426183	⬆ 1	⬇ 1	⬇ 2		81.5		16.8	1.6
34	MOXA	359561	⬆ 4				100.0
35	Rechenkraft.net	344112	⬆ 1				0.1	51.2	5.3	7.1	36.2
36	S485122	302849	⬆ 3	⬆ 1				95.1		4.9
37	GIMPS.Japan	290844	⬇ 2	⬆ 1			45.9		39.4	14.4	0.3
38	nranks	285080	⬆ 5	⬆ 1			26.4	0.4	2.3	0.3	70.7
39	Terry Kim Team	238972	⬇ 2	⬇ 3			93.7		4.8	1.0
40	NanJing Tech	237575	⬆ 4	⬆ 1			22.1		67.3	10.4
41	GIMPS Team Philippines	210092	⬆ 4	⬆ 1			46.1		10.6	2.2	36.5
42	YahsTeam	206515		⬇ 2			86.8		10.2	3.0
43	IOTA	156860	⬆ 11	⬆ 4	⬆ 3	⬆ 1	93.8		4.3	2.0
44	GIMPS.Portugal	156384	⬆ 13	⬆ 2	⬆ 1	⬆ 1	49.7	48.9		1.4
45	NerdyGirls	155787	⬆ 1	⬇ 2	⬇ 2	⬇ 2		44.7	5.2	50.1
46	Team Tartan	153920	⬆ 2	⬇ 2	⬇ 2				76.9	23.1
47	Canada	147403		⬇ 2			9.6	0.5	65.0	24.9
48	GIMPS.NZ	138238	⬆ 2				78.7	0.2	12.9	8.1	0.1
49	Team China	134150	⬆ 2				0.3		99.4	0.3
50	ComputerraRU	117420	⬆ 28	⬆ 11	⬆ 2		72.7		25.2	2.1
51	VIPR	113000	⬆ 8	⬆ 3			96.7		2.1	1.0
52	Unicamp	101684		⬇ 1	⬆ 1		68.8		30.2	1.0
53	GIMPS.France	98363			⬆ 4		0.2	88.1	5.8	4.3	1.5
54	Wile E. Coyote	97556	⬆ 7	⬆ 3	⬆ 1	⬆ 1			70.3	0.1	29.6
55	UIUC	97268	⬆ 3		⬇ 1	⬇ 1			66.6	33.4
56	AMD Users	93068	⬇ 1				50.1	0.6	0.9	47.9	0.4
57	NetBSD	89615	⬆ 160	⬆ 159	⬆ 154	⬆ 1		100.0
58	NUST	88664	⬆ 39	⬆ 1		⬇ 1	56.9	41.7	0.9	0.5
59	SHADO	76487	⬆ 3	⬆ 3					63.5	17.5	12.0	0.8
60	GIMPS China	72460	⬆ 3		⬆ 1	⬆ 1	85.2		8.8	0.1	5.6
61	Eratosthenes Sieve	71224	⬆ 4	⬆ 2	⬇ 1	⬇ 1			93.6	6.4
62	SASAKI	70829	⬇ 6	⬇ 4			100.0
63	Net-Work	68774	⬆ 1	⬆ 1			6.5	1.2		0.8	79.0
64	S147127	67582	⬆ 5	⬆ 2		⬆ 1	33.4		33.3	33.3
65	Team_Italia	67298	⬆ 8	⬆ 2		⬇ 1	3.4	0.5	65.6	21.9	5.9	1.1
66	Wisconsin	65020	⬇ 6	⬇ 1			23.6		41.3	35.0
67	Esperanto	63346	⬆ 3	⬆ 1				25.5	5.1	69.3
68	ParadoxZ Commando	62299	⬆ 3	⬆ 1					71.6	28.4
69	EgyptianPolymaths	51641	⬆ 6	⬆ 2	⬆ 1			81.3
70	SpongeBob SquarePants	47512	⬇ 46	⬇ 39	⬇ 20			64.7	26.4	8.9
71	AJ	47192	⬆ 3	⬆ 4	⬆ 1				75.0	25.0
72	Cap'n Entropy's Cavalcade of Wonderment	46974	⬇ 5		⬇ 1		67.8	9.7	17.9	4.6
73	Aiblspitz	41607	⬆ 22	⬆ 6	⬆ 1			93.4		6.6
74	Brno University of Technology	41043	⬆ 3	⬆ 2	⬇ 1				76.8	23.2
75	One Man Team	40330	⬇ 59	⬆ 2		⬆ 1			99.9
76	Team Israel	40312	⬇ 4	⬇ 3		⬇ 1	94.2		5.2	0.6
77	Hungary	40281	⬇ 1	⬇ 3					6.0	1.3	92.6
78	Team Belgium	38353	⬆ 1				1.3	2.5	35.4	22.7	38.1
79	Turku	36285	⬆ 2	⬆ 2					100.0
80	huskers-gimps	33943	⬆ 3			⬆ 1			74.9	25.1
81	ᕙ(⇀‸↼‶)ᕗ	33607	⬆ 7	⬆ 4		⬆ 1	0.6		98.9	0.5
82	Hermessz	32663	⬆ 4	⬆ 1		⬆ 1	63.6		34.0	2.4
83	Team H	31934	⬆ 2	⬆ 1	⬆ 1	⬆ 1	14.5		84.9	0.5
84	OverclockerAustralia	31212	⬇ 35	⬇ 32	⬇ 15	⬇ 4	14.5			68.3
85	MurrayInfoSys	30365	⬆ 8	⬆ 4		⬆ 1			70.7	29.3
86	Debian	30222	⬆ 1	⬇ 4	⬇ 3	⬇ 1			98.1	1.9
87	baraCUDA	29906	⬆ 2		⬇ 1				100.0
88	GIMPS.NEO	27387	⬇ 8	⬇ 2	⬇ 1				83.5	16.5
89	HardOCP	26270	⬇ 5	⬆ 2	⬆ 2	⬆ 4			72.2	27.8
90	The Fellowship of Infinity	25901	⬆ 2		⬇ 2	⬇ 1			99.6	0.4
91	Mensa	25377	⬆ 37	⬆ 16	⬆ 3				71.8	28.2
92	Channel 4	24726	⬇ 1	⬆ 1	⬇ 2				80.7	19.3
93	Small-Team-2000	23991	⬇ 3	⬆ 1	⬇ 4	⬇ 3				99.5	0.5
94	Costa Rica	23202		⬆ 1	⬇ 1				83.0	16.5
95	Team Viet Nam	21773	⬇ 13	⬇ 7	⬇ 3		56.1		25.1	18.8
96	Georgia Tech	20319	⬆ 2	⬆ 1	⬇ 1				100.0
97	Com Systems (RU)	19840	⬆ 6	⬆ 1	⬇ 1				71.4	28.6
98	randomteam	19223	⬇ 32	⬆ 1	⬇ 1						100.0
99	socal_prime	18635	⬇ 3	⬇ 3	⬇ 1				71.8	28.2
100	GIMPS Romania	17483	⬆ 2	⬆ 1			73.6		23.5	3.0
101	SpartaAlumni	17277	⬆ 4	⬆ 4	⬆ 1				64.0	36.0
102	LimePrime	16677	⬇ 3	⬇ 2	⬇ 3				90.4	9.6
103	RobotechResearch	16613	⬆ 6		⬇ 2				48.0	52.0
104	A Single Engineer	16025	⬇ 4	⬇ 2	⬇ 1				73.3	26.7
105	TurkishMath	15362	⬆ 2	⬆ 1	⬇ 1				94.9	5.1
106	PrimitiveRootsCircle	14401	⬇ 2	⬇ 2	⬇ 1		4.3		66.7	27.6	1.3
107	moeses	13464	⬆ 3	⬆ 2		⬆ 1			99.0	1.0
108	Prime Rib	12930	⬆ 28	⬆ 10	⬇ 2	⬇ 1			98.5	1.5
109	Portland State University	11737	⬆ 5	⬆ 2				33.4	64.1	2.6
110	The_Dude_Abides	11715	⬆ 28	⬆ 10					28.4	56.2	0.8
111	FREE ROBUX	10852	⬆ 4	⬆ 1	⬆ 1				100.0
112	Royal Military College of Canada	10691	⬆ 5	⬆ 1	⬆ 1		89.7		7.9	2.4
113	Ozzie Prime	10625	⬇ 1	⬆ 10	⬆ 1				22.6	15.6		61.9
114	University of Waterloo	10621	⬆ 5	⬆ 3	⬆ 2				94.9	5.1
115	GIMPS.Taiwan	9656	⬆ 19	⬆ 18	⬆ 16	⬆ 1			86.3	13.2	0.1
116	Team Retired	9587	⬇ 15	⬇ 8	⬇ 5	⬇ 1				3.6
117	Shaffer's Studio	9455	⬆ 6	⬆ 7					91.3	8.6
118	Syntony	9382	⬆ 2	⬆ 1						100.0
119	Team Finland	9119	⬇ 1	⬇ 5	⬇ 4	⬆ 1	2.5		94.6		2.9
120	Arpan Sen Labs	9113	⬆ 19	⬆ 6	⬇ 1	⬇ 1			58.0	42.0
121	LTT fans	9056	⬆ 1		⬇ 1		92.5				7.5
122	Morocco	8785	⬆ 22	⬆ 10	⬆ 7				66.0	34.0
123	Team Slovenia	8636	⬇ 7	⬇ 7	⬇ 1				63.2	36.7
124	BitMEX Research	8580	⬇ 56	⬇ 32	⬇ 16				99.9	0.1
125	math.auth.gr	8551	⬆ 1		⬇ 2				100.0
126	Pavlicin	8407	⬆ 1	⬆ 1	⬇ 2		79.7	0.1	20.2
127	JiBoTeam	8318	⬇ 2	⬆ 2	⬇ 6					100.0
128	FreeBSD	8244	⬆ 1	⬆ 3	⬇ 1	⬆ 1			69.1	30.9
129	Nerdfighters for Mersenne Primes	8230	⬇ 16	⬇ 7	⬇ 3	⬆ 1			96.6	3.4
130	Spain	7527	⬇ 22	⬇ 15	⬇ 5	⬇ 2			73.1	26.9
131	Die Zeitfinder	7337	⬇ 1	⬇ 1	⬇ 3				89.4	10.6
132	SETI.Germany	7260	⬇ 11	⬇ 4	⬇ 2					100.0
133	México mágico	7231	⬆ 9	⬆ 10	⬆ 9				88.7	11.3
134	Granada	6899	⬇ 10		⬇ 2	⬆ 1	31.2		23.0	45.7
135	Server66	6758	⬇ 2		⬇ 2	⬆ 1	100.0
136	FactorMania	6572	⬆ 1		⬇ 2	⬆ 1		56.9			43.1
137	Triangle	6399	⬇ 5	⬆ 1	⬇ 2	⬇ 3			98.9	1.1
138	Korea.Prime	6334	⬆ 12	⬆ 1	⬇ 2				74.9	25.1
139	SETI.USA	6187	⬆ 78	⬆ 14	⬆ 4				68.4	31.6
140	irowiki	6116		⬆ 1	⬇ 1					100.0
141	Team Bulgaria	6074	⬆ 42	⬆ 38	⬆ 9				68.3	30.9	0.7
142	Brasil	6006	⬆ 3	⬆ 3	⬇ 5				79.6	20.2
143	Team Christensen	5911	⬇ 2	⬇ 3	⬇ 5					100.0
144	Phi Kappa Theta	5722	⬆ 12	⬆ 7	⬇ 4				72.9	27.1
145	Abacus	5573	⬇ 14	⬇ 8	⬇ 4				98.8	1.2
146	The Court of the Math Jester	4949	⬆ 71	⬆ 23	⬆ 7	⬆ 7	1.8		87.0	11.2
147	KnightLight	4941	⬇ 1	⬇ 1	⬇ 2	⬇ 1				100.0
148	DePaul MAT 141	4934			⬇ 2	⬇ 1			99.6	0.4
149	Crunching@EVGA	4888			⬇ 2	⬇ 1			99.7	0.3
150	Politeknik Banting, Selangor	4812	⬆ 7	⬆ 6	⬆ 1		99.9			0.1
151	teamMALI	4763	⬆ 2	⬇ 9	⬇ 7	⬇ 2			84.0	16.0
152	YESHUA IS THE MESSIAH	4648		⬇ 2	⬇ 3	⬇ 1			99.2	0.8
153	Hong Kong GIMP	4518	⬇ 2	⬇ 9	⬇ 5	⬇ 1			70.9	29.1
154	Noam Karni Team	3702	⬆ 1						85.3	14.7
155	Quantus	3553	⬇ 44	⬇ 45			34.2		44.4	21.4
156	Catalunya Team	3433	⬆ 61	⬆ 12	⬆ 1	⬆ 1			99.2	0.8
157	Team Norway	3377	⬇ 22	⬇ 5	⬇ 1	⬇ 1	73.6			7.6	18.1
158	Pi Rho	2499	⬆ 3	⬇ 1					67.1	32.9
159	GIMPSMalaysia	2394	⬆ 3	⬇ 1	⬆ 1				66.8	33.2
160	GIMPS.Hong Kong	2387		⬆ 3	⬇ 1		1.5		35.1	63.4
161	cr_colorado	2344	⬆ 13	⬆ 11	⬆ 8					100.0
162	CZAsTc	2288	⬆ 3	⬇ 3	⬇ 1				99.6	0.4
163	The Planetary Society	2237	⬆ 54	⬇ 3	⬇ 1				76.1	23.9
164	Team Austria	2199	⬆ 3	⬇ 3	⬇ 1		12.8	9.5	77.7
165	GIMPS_KS	2199	⬆ 3	⬇ 3	⬇ 1				36.5	62.0	1.4
166	Olympic College	2074	⬇ 8	⬇ 11	⬇ 1					100.0
167	The Prime Pioneers	1919	⬆ 3	⬇ 2	⬇ 1			100.0
168	Timesc	1711	⬆ 49	⬆ 14	⬆ 14	⬆ 16			100.0
169	Denmark	1685	⬆ 48	⬆ 30	⬆ 2	⬇ 1			50.8	49.2
170	Smoke-it	1685	⬇ 129	⬇ 100	⬇ 18	⬇ 1	100.0
171	Obsidian	1579	⬆ 4		⬇ 4	⬇ 1				100.0
172	hreid	1575	⬆ 1	⬇ 2	⬇ 4	⬇ 1			100.0
173	I Love Canadian Natural Resources	1542	⬆ 3		⬇ 3	⬇ 1				100.0
174	alan145	1527	⬆ 37	⬆ 21	⬇ 1	⬇ 1	72.8	9.0			18.2
175	Vegan	1384	⬆ 24	⬇ 1		⬇ 1			60.9	39.1
176	zeit	1283	⬇ 13	⬇ 10	⬇ 4	⬇ 1	17.8			82.2
177	Azerbaijan	1139	⬆ 40	⬆ 7	⬇ 3	⬇ 1				98.1	1.8
178	Amserver	1066		⬇ 3	⬇ 2	⬇ 1	100.0
179	youngfun429	1037	⬆ 1	⬇ 2	⬇ 2	⬇ 1			75.3	24.7
180	Elisabeth-von-Thadden-Schule	1015	⬇ 37	⬇ 13	⬇ 2	⬇ 1			76.2	23.8
181	Therian Primes	1007	⬆ 1	⬇ 3	⬇ 2	⬇ 1		14.6		52.4	33.0
182	Subprime Searches	1006	⬆ 20	⬆ 22	⬆ 18	⬇ 1	74.6			25.4
183	RafaÅ‚ HacuÅ›	860	⬆ 2	⬇ 3	⬇ 3	⬇ 1			100.0
184	Czech National Team	857		⬇ 3	⬇ 3	⬇ 1			96.7	0.2	1.8
185	UMD University of Maryland Prime Hunters	850	⬆ 32	⬇ 2	⬇ 2				100.0
186	PARG team	838	⬆ 7	⬆ 4	⬆ 2					97.4	2.6
187	AWC	801	⬇ 1	⬇ 1	⬇ 3				100.0
188	VRS_SE	797	⬇ 19	⬇ 12	⬇ 3				98.6	1.4
189	Hyperion	642	⬇ 35	⬇ 25	⬇ 3					6.3
190	SGDynamo Dresden	579	⬆ 2	⬆ 1	⬇ 3		100.0
191	Join Us 😈	543	⬇ 12	⬆ 1	⬇ 2		35.2			64.8
192	PrimeObsession	539	⬆ 2	⬆ 1	⬇ 2					100.0
193	Much prime! (wow)	532	⬆ 24	⬆ 23	⬇ 2					100.0
194	Furry Primes	514	⬇ 30	⬇ 9	⬇ 2					100.0
195	GIMPS.Romania	422		⬆ 1	⬇ 2				100.0
196	Kabylie	342	⬇ 30	⬇ 7	⬇ 2		26.8			73.2
197	LIKN	285	⬆ 20	⬆ 1	⬇ 2					99.9
198	Yurunago	276		⬆ 2	⬇ 2					100.0
199	Byberg Nordic Prime	265	⬆ 1	⬆ 2	⬇ 2					100.0
200	FDY	265	⬆ 1	⬆ 2	⬇ 2					100.0
201	TunisianTeam	258	⬇ 20	⬆ 2	⬇ 2					100.0
202	miiro	240	⬆ 3	⬆ 4	⬇ 1		100.0
203	DividerHunt	221	⬆ 4	⬆ 4	⬇ 1		100.0
204	/r/counting	184	⬆ 6	⬆ 4	⬇ 1
205	GIMPS.Peace	122	⬆ 7	⬆ 5	⬇ 1		44.7	55.3
206	sannerud.com	110	⬆ 8	⬆ 5	⬇ 1		42.4				20.7	36.9
207	Optimists Prime	54	⬆ 10	⬆ 9	⬆ 4			100.0
208	His Dark Materials	48	⬇ 12	⬆ 1	⬇ 2						100.0
209	Team Dominik Radler	46	⬇ 1	⬆ 3	⬇ 2		100.0
210	GIMPS_IOM	19	⬇ 13	⬆ 3	⬇ 2		100.0
211	Weatopians	2	⬇ 22	⬇ 23	⬇ 2					100.0
212	yfinder	0	⬆ 4	⬆ 3	⬇ 2					100.0