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 2026-08-15 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	211108584		⬆ 1			0.6		0.2		99.1
2	Ars Technica Team Prime Rib	162320082	⬆ 2	⬆ 2				99.3		0.7
3	Slovakia	156282143	⬇ 1	⬇ 2			0.3	88.4	0.4	0.1	10.8
4	PrimeNet	150343882	⬆ 1	⬇ 1			0.2	80.0	0.6	0.8	18.4
5	POLAND	111978385	⬇ 2				0.9	95.3	0.4	0.1	3.3
6	-Too many Ones-	65685417						77.7			22.2
7	Team#1	23007900	⬆ 1				1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	20828482	⬇ 1				47.2	32.1	4.3	0.7	15.6
9	Numberphile	12606159	⬆ 9	⬆ 1			3.3	18.0	4.9	1.7	72.1
10	UCM-curtisc	12440385	⬆ 2	⬆ 1					99.2	0.7
11	Team-Deutschland	11780914		⬆ 1			2.1	62.0	1.1	0.2	34.5
12	More Power!!!	9359971	⬆ 1	⬆ 1			18.1	74.2	3.1	2.8	1.7
13	TeamUK	6499697	⬆ 2	⬆ 1			45.8	2.6	21.3	1.8	28.4
14	Porta Kruse	6338520	⬆ 2	⬆ 1			2.0	0.5			91.2	6.2
15	GW's legions	6049991	⬇ 5	⬇ 6			0.1	1.9	89.1	4.1	4.8
16	GPU to 72	5782798	⬆ 1	⬆ 1			45.6	35.2	1.5	3.2	14.2
17	One Man Team	3658560	⬇ 8	⬇ 1				98.7	1.3
18	UW Eau Claire	3654141	⬆ 1	⬆ 1			91.1		6.5	2.4
19	tsc	3551320	⬆ 1	⬇ 1			59.4	2.3	0.9	0.3	37.1
20	UKRAINE	2923108	⬆ 2				5.7	4.9	80.7	8.6
21	Argentina	2563445					92.1		7.9
22	Wikipedia	1920289	⬆ 2				57.5	34.8	4.7	2.0	0.8
23	GIMPS.Korea	1649032	⬆ 6				87.4	4.6	3.7	0.8	3.3
24	GIMPS.Occitania	1187005	⬆ 4	⬆ 1				4.4				95.6
25	Swedes Of Primes	946836	⬆ 2	⬆ 1			1.6	77.7	17.3	3.4
26	404 - "Primes not Found"	938569	⬆ 14	⬆ 3	⬆ 1		93.2		6.7	0.1
27	Dutch Power Cows	845409	⬇ 1		⬇ 1		52.5	13.1	1.9	3.0	29.4
28	MBAi.Cloud	834411	⬆ 2		⬆ 1				99.9	0.1
29	SpongeBob SquarePants	779343	⬇ 6	⬇ 5	⬇ 1			30.6	65.2	4.2
30	MATHSareREAL	578886	⬆ 1				96.2		2.5	1.3
31	GIMPS.USA	472607	⬆ 12	⬆ 1	⬆ 1		30.6	45.2	17.4	4.0	2.3
32	Buhr	470568	⬆ 1	⬇ 1	⬇ 1		45.2	5.9	16.7	5.7	26.5
33	Colorado School of Mines	412826	⬆ 4	⬆ 1			84.2		14.6	1.3
34	citizenscience.ru	380244	⬇ 2	⬇ 1			84.8	1.7	8.3	1.1	4.0	0.2
35	MOXA	357710	⬇ 1	⬆ 3	⬆ 2		99.6		0.4
36	Rechenkraft.net	355668	⬇ 1	⬇ 1		⬆ 1	0.1	50.8	6.0	7.1	35.8
37	Terry Kim Team	353594	⬇ 1	⬇ 1	⬇ 2	⬇ 1	95.6		3.2	0.8
38	GIMPS.Japan	310885	⬇ 13	⬇ 1			43.3		39.5	14.2	2.8
39	S485122	300927	⬇ 1					95.1		4.9
40	nranks	263353	⬆ 1	⬆ 2			28.3	0.4	2.7	0.3	68.2
41	YahsTeam	230923	⬆ 1	⬇ 1			86.8		10.6	2.6
42	NanJing Tech	216777	⬆ 6	⬆ 2			24.2		72.4	3.4
43	GIMPS Team Philippines	200712	⬆ 1	⬆ 2			48.3		10.7	1.8	34.7
44	NerdyGirls	187477	⬆ 1	⬆ 2				45.3	4.7	50.0
45	Canada	173833	⬆ 1	⬆ 2			8.1	1.2	65.8	25.0
46	Team Tartan	166385	⬆ 1	⬆ 2					76.9	23.1
47	GIMPS.Portugal	152941	⬆ 12	⬆ 8	⬆ 1		48.5	50.0		1.5
48	OverclockerAustralia	146954	⬆ 2	⬆ 1	⬆ 1		59.8		14.3	19.6
49	Smoke-it	141208	⬇ 10	⬇ 6	⬇ 2		91.5	6.7	1.7
50	IOTA	139658	⬆ 8	⬆ 3	⬆ 3		93.6		4.8	1.6
51	GIMPS.NZ	138196		⬇ 1	⬇ 1		78.9	0.2	11.5	9.3	0.1
52	Team China	132470		⬇ 1					99.7	0.3
53	Unicamp	121577		⬇ 1	⬆ 1		68.7		28.5	2.7
54	GIMPS.France	117218			⬆ 1		9.5	68.4	4.9	5.3	11.8
55	VIPR	108798	⬆ 26	⬆ 2	⬆ 1		95.4		2.9	1.5
56	unRAID	98435	⬇ 42	⬇ 15	⬇ 5			26.9	65.1	7.2	0.8
57	UIUC	94682	⬆ 5	⬆ 2					67.4	32.6
58	AMD Users	94090	⬆ 3	⬇ 2			49.6	0.6	5.9	43.5	0.4
59	SASAKI	84851	⬇ 4	⬇ 1			100.0
60	Wile E. Coyote	84381	⬆ 8	⬆ 2					75.3	0.4	24.3
61	Wisconsin	76214	⬇ 1		⬆ 1		30.8		36.2	33.0
62	SHADO	74296	⬆ 3	⬇ 2	⬇ 1				60.6	19.5	12.3	1.1
63	GIMPS China	73385	⬇ 7		⬆ 2		81.4		11.9	0.1	6.5
64	Eratosthenes Sieve	73172	⬆ 3	⬆ 1	⬇ 1		0.8		94.7	4.5
65	Net-Work	72905	⬇ 1	⬇ 1	⬇ 1		5.9	1.0			82.2
66	S147127	68508	⬆ 5	⬆ 1	⬆ 1		33.6		25.8	40.6
67	NUST	66370	⬆ 40	⬆ 12	⬆ 4	⬆ 1	54.9	43.2	1.3	0.6
68	Team_Italia	65693	⬆ 6	⬆ 2		⬇ 1	3.1	0.5	64.5	23.7	4.5	2.1
69	ParadoxZ Commando	64234	⬆ 4		⬆ 1				71.6	28.4
70	Esperanto	63670	⬇ 1	⬇ 2	⬇ 1			26.2	3.8	70.0
71	Cap'n Entropy's Cavalcade of Wonderment	56175	⬇ 8		⬆ 1		70.2	8.6	17.5	3.8
72	Team Israel	55375		⬆ 1	⬆ 1		96.7		2.9	0.5
73	Hungary	52746	⬆ 2	⬆ 2	⬆ 1				4.6	1.0	94.4
74	EgyptianPolymaths	50691	⬇ 8		⬆ 1	⬆ 1		85.1
75	ComputerraRU	47486	⬆ 1	⬆ 3	⬆ 1	⬆ 1	24.5		70.2	5.3
76	AJ	45414	⬇ 6		⬆ 1	⬆ 2			74.1	25.9
77	Brno University of Technology	45071			⬆ 1			1.2	77.1	21.7
78	randomteam	44863	⬇ 29	⬇ 12	⬇ 12	⬇ 4					100.0
79	BitMEX Research	41112	⬇ 22	⬇ 7					92.4	7.6
80	Team Belgium	38740	⬇ 1	⬆ 1			1.4	2.5	32.8	25.6	37.7
81	huskers-gimps	36621	⬆ 3	⬆ 2					75.6	24.4
82	Turku	36285	⬆ 1						100.0
83	Team Viet Nam	35013	⬇ 3	⬆ 1	⬆ 1	⬆ 1	34.9		38.0	27.1
84	GIMPS.NEO	34965	⬇ 6	⬇ 4	⬇ 1	⬇ 1			82.9	17.1
85	Aiblspitz	34065	⬆ 19	⬆ 6				92.0		8.0
86	Debian	33368							98.2	1.8
87	Hermessz	32782					64.0		36.0
88	Team H	31688	⬇ 3	⬇ 3			14.4		85.0	0.6
89	ᕙ(⇀‸↼‶)ᕗ	31555	⬇ 1				0.7		98.9	0.4
90	baraCUDA	29906	⬆ 1		⬆ 1				100.0
91	The Fellowship of Infinity	28952	⬆ 3	⬆ 1	⬆ 1				99.5	0.5
92	HardOCP	28003	⬇ 10	⬇ 4	⬇ 2				72.6	27.4
93	Small-Team-2000	27016	⬇ 4	⬆ 1	⬆ 2	⬆ 3			2.9	97.1
94	MurrayInfoSys	26977	⬆ 3	⬆ 1					65.2	34.7
95	Channel 4	26321	⬇ 2	⬇ 2	⬆ 1				81.8	18.2
96	Costa Rica	23367			⬇ 3	⬇ 3			77.9	21.8
97	socal_prime	23016	⬇ 5						75.1	24.7	0.1
98	Georgia Tech	20319							100.0
99	Com Systems (RU)	18707	⬆ 11	⬆ 4	⬆ 1				71.2	28.8
100	LimePrime	17838	⬆ 5	⬇ 1	⬇ 1			0.9	88.7	10.4
101	GIMPS Romania	17420	⬆ 1	⬆ 1	⬆ 2	⬆ 1	73.8		23.2	3.0
102	A Single Engineer	16947	⬇ 2	⬇ 1		⬇ 1			73.6	26.4
103	SpartaAlumni	16327	⬇ 2	⬆ 1	⬆ 1				77.1	22.9
104	Team Retired	15894	⬇ 5	⬇ 4	⬇ 3				24.5	13.3
105	PrimitiveRootsCircle	15777	⬇ 2		⬆ 1		10.3		60.3	26.6	2.8
106	TurkishMath	15298	⬆ 13		⬆ 1				94.9	5.1
107	RobotechResearch	15247	⬆ 10	⬆ 1	⬇ 2				52.3	47.7
108	moeses	12626	⬆ 4	⬆ 1					98.9	1.1
109	Quantus	12170	⬆ 6	⬆ 1			10.0		13.0	25.1		51.9
110	Spain	11920	⬆ 1	⬇ 3					72.3	27.7
111	Ozzie Prime	11147	⬇ 2						42.5	14.4		43.0
112	FREE ROBUX	10852	⬆ 8	⬆ 1					100.0
113	Prime Rib	10746	⬆ 26	⬆ 24	⬆ 4				97.8	2.2
114	Team Slovenia	10722	⬇ 1	⬆ 1	⬇ 1				65.6	34.4
115	Royal Military College of Canada	10691	⬆ 6	⬆ 1	⬇ 1		89.7		7.9	2.4
116	Team Finland	10589		⬆ 2	⬇ 1		1.3		96.2		2.5
117	Portland State University	9801	⬇ 11	⬇ 5	⬆ 1			46.4	50.5	3.1
118	Nerdfighters for Mersenne Primes	9775	⬇ 4	⬇ 4	⬇ 2				97.1	2.9
119	Syntony	9584	⬆ 5	⬆ 2	⬆ 1	⬆ 1				100.0
120	Shaffer's Studio	9535	⬆ 8		⬆ 3	⬆ 1			90.3	9.6
121	LTT fans	9056	⬇ 31	⬆ 1		⬆ 1	92.5				7.5
122	University of Waterloo	8926	⬆ 7	⬇ 3	⬇ 3	⬇ 3			93.9	6.1
123	SETI.Germany	8554	⬇ 5	⬆ 6	⬆ 3			11.1		88.9
124	math.auth.gr	8551	⬆ 8	⬆ 1					100.0
125	Pavlicin	8407	⬆ 29	⬆ 1			79.7	0.1	20.2
126	The_Dude_Abides	8364	⬆ 29	⬆ 5	⬆ 4	⬆ 1			29.9	52.6	1.2
127	Mensa	8262			⬆ 7	⬆ 1			66.9	33.1
128	JiBoTeam	8186	⬇ 2	⬇ 4	⬇ 1	⬆ 1				100.0
129	Server66	8041	⬆ 30	⬆ 3	⬇ 7	⬇ 3	100.0
130	Die Zeitfinder	7985	⬆ 1	⬇ 7	⬇ 2				90.3	9.7
131	Arpan Sen Labs	7742	⬆ 21	⬆ 5		⬆ 1			58.0	41.9
132	Triangle	7153	⬇ 2	⬆ 2		⬆ 1			98.8	1.2
133	Abacus	7147	⬆ 2			⬆ 1			98.8	1.2
134	Morocco	7091	⬆ 35	⬆ 11	⬆ 3	⬆ 1			58.1	41.9
135	FreeBSD	7074	⬇ 1	⬇ 7	⬇ 6	⬇ 4			67.7	32.3
136	GIMPS.Taiwan	7047	⬇ 13	⬇ 1					81.2	18.1	0.1
137	FactorMania	6572	⬆ 6	⬆ 1	⬆ 1			56.9			43.1
138	Granada	6355	⬇ 16	⬇ 8	⬇ 3		33.3		25.0	40.9
139	irowiki	6074	⬆ 1	⬆ 2	⬆ 1					100.0
140	Team Christensen	5857	⬆ 2	⬆ 2	⬇ 1					100.0
141	México mágico	5568	⬆ 15	⬆ 2	⬆ 1				85.3	14.6
142	Korea.Prime	5519	⬆ 11	⬆ 2	⬆ 1				71.4	28.6
143	Brasil	5423	⬇ 7	⬇ 4	⬆ 1				72.7	27.1
144	Hong Kong GIMP	5276	⬆ 6	⬆ 8	⬆ 1				75.4	24.6
145	KnightLight	4970		⬆ 1	⬆ 1					100.0
146	teamMALI	4955	⬆ 1	⬆ 7	⬆ 1				79.6	20.4
147	nmbarek_team	4942	⬇ 1		⬆ 1				100.0
148	DePaul MAT 141	4934	⬆ 30		⬆ 1				99.6	0.4
149	Crunching@EVGA	4888	⬇ 1		⬆ 1				99.7	0.3
150	YESHUA IS THE MESSIAH	4648	⬆ 14		⬆ 2				99.2	0.8
151	Phi Kappa Theta	4602	⬆ 9	⬆ 4	⬆ 2				72.3	27.7
152	Team Norway	4529	⬇ 27	⬇ 12	⬇ 11		72.7			5.7	21.2
153	MES-Team	4174	⬇ 58	⬇ 36	⬇ 2		63.1	7.1		29.8
154	Noam Karni Team	3963	⬆ 4						79.7	20.3
155	Politeknik Banting, Selangor	3101	⬇ 17	⬆ 2			65.4		25.5	9.1
156	Olympic College	3075	⬆ 1	⬆ 2						100.0
157	GIMPS.Hong Kong	2902	⬆ 4	⬆ 2			1.9		55.6	42.5
158	Pi Rho	2499	⬆ 10	⬆ 2	⬆ 2	⬆ 1			67.1	32.9
159	GIMPSMalaysia	2394	⬆ 11	⬆ 2	⬆ 2	⬆ 1			66.8	33.2
160	CZAsTc	2288	⬆ 24	⬆ 3	⬆ 2	⬆ 1			99.6	0.4
161	The Planetary Society	2237	⬆ 64	⬆ 36	⬆ 2	⬆ 2			76.1	23.9
162	Hyperion	2207	⬇ 25	⬇ 6	⬇ 3					25.0
163	Team Austria	2199	⬇ 55	⬆ 1	⬆ 1	⬆ 1	12.8	9.5	77.7
164	GIMPS_KS	2199	⬆ 9	⬆ 1	⬆ 1	⬆ 1			36.5	62.0	1.4
165	zeit	2075	⬇ 2	⬇ 3	⬆ 1	⬆ 1	13.2			86.8
166	SETI.USA	1959	⬆ 59	⬆ 49	⬆ 25	⬆ 1			43.4	56.6
167	The Prime Pioneers	1919	⬆ 9	⬆ 1		⬆ 1		100.0
168	VRS_SE	1846	⬆ 4	⬆ 2		⬆ 1			85.4	14.6
169	Obsidian	1817	⬆ 14	⬆ 5		⬆ 1				100.0
170	Elisabeth-von-Thadden-Schule	1788	⬇ 26	⬇ 19	⬇ 12	⬇ 12			86.5	13.5
171	San Francisco	1586	⬆ 9		⬇ 1				100.0
172	hreid	1575	⬆ 9		⬇ 1				100.0
173	cr_colorado	1549	⬆ 9		⬇ 1					100.0
174	Furry Primes	1339	⬇ 12	⬇ 7	⬇ 1		61.6			38.4
175	Amserver	1066	⬆ 50	⬆ 3		⬆ 1	100.0
176	Join Us 😈	1060	⬆ 12	⬆ 3		⬆ 1	66.8			33.2
177	Kabylie	1060	⬇ 11	⬇ 11	⬇ 3	⬇ 2	25.9	2.7		71.4
178	youngfun429	1037	⬇ 7	⬆ 2	⬇ 1				75.3	24.7
179	I Love Canadian Natural Resources	1018	⬇ 5	⬇ 4						100.0
180	Therian Primes	1007	⬆ 10	⬆ 2				14.6		52.4	33.0
181	Team Bulgaria	905	⬆ 37	⬆ 2	⬆ 1				95.0		5.0
182	RafaÅ‚ HacuÅ›	860	⬆ 43	⬆ 3	⬆ 1				100.0
183	Czech National Team	860	⬆ 8	⬆ 1	⬆ 1				96.4	0.5	1.8
184	UMD University of Maryland Prime Hunters	850	⬆ 41	⬆ 31	⬆ 1	⬆ 1			100.0
185	3DCenter.org	828	⬇ 10	⬇ 8	⬇ 4	⬇ 1					100.0
186	AWC	801	⬆ 7						100.0
187	GIMPS Asturias	794	⬆ 7						99.6	0.4
188	Weatopians	793	⬆ 7						99.7	0.3
189	PARG team	563	⬆ 32	⬆ 2	⬆ 1					96.2	3.8
190	SGDynamo Dresden	549	⬆ 8		⬇ 1		100.0
191	PrimeObsession	539	⬆ 8	⬆ 1	⬆ 1					100.0
192	GIMPS.Romania	422	⬆ 8	⬆ 1	⬆ 1				100.0
193	LIKN	285	⬆ 32	⬆ 22	⬆ 1					99.9
194	Yurunago	276	⬆ 10	⬆ 1	⬆ 1					100.0
195	Vegan	275	⬆ 10	⬆ 1	⬆ 1					100.0
196	Byberg Nordic Prime	265	⬆ 10	⬆ 2	⬆ 1					100.0
197	FDY	265	⬆ 10	⬆ 2	⬆ 1					100.0
198	TunisianTeam	258	⬇ 9	⬇ 17	⬇ 20					100.0
199	Subprime Searches	256	⬇ 12	⬆ 1						100.0
200	GIMPS Hams	253	⬆ 10	⬆ 1				100.0
201	WSU Cougars	247	⬇ 16	⬆ 1						100.0
202	miiro	240	⬆ 13	⬆ 1			100.0
203	alan145	236	⬇ 1	⬆ 7			87.6				12.4
204	DividerHunt	221	⬆ 7	⬆ 2	⬆ 1		100.0
205	His Dark Materials	204	⬇ 9	⬇ 11	⬇ 1						99.9
206	/r/counting	184	⬆ 8	⬆ 3	⬆ 2
207	Team Dominik Radler	183	⬇ 4		⬆ 2		100.0
208	GIMPS_IOM	153	⬇ 22	⬇ 3	⬇ 2		100.0
209	GIMPS.Peace	122	⬆ 7	⬆ 2	⬆ 1		44.7	55.3
210	sannerud.com	108	⬆ 9	⬆ 2	⬆ 1		43.1				19.4	37.5
211	PROMYS	23	⬆ 9	⬆ 2	⬆ 1						100.0
212	yfinder	1	⬆ 12	⬆ 2	⬆ 1					100.0