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 2026-04-26 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	828866351					0.2		0.1		99.7
2	Slovakia	770789698					0.1	98.6	0.1		1.2
3	POLAND	210620864	⬆ 1	⬆ 1	⬆ 1		0.5	97.7	0.3	0.1	1.5
4	-Too many Ones-	158283520	⬆ 1	⬆ 1	⬆ 1		0.1	90.5			9.4
5	PrimeNet	128798033	⬇ 2	⬇ 2	⬇ 2		0.2	93.1	0.7	0.9	5.1
6	Ars Technica Team Prime Rib	118489143	⬆ 1					99.1		0.8
7	unRAID	33342788	⬇ 1					99.7	0.3
8	GIMPSChina	21975755					69.2	20.3	4.0	0.6	5.8
9	One Man Team	13937487		⬆ 1				99.5	0.5
10	GW's legions	13155190	⬆ 1	⬆ 1				0.8	34.1	1.3	63.6
11	Team-Deutschland	12887670	⬆ 2	⬆ 1			2.8	36.6	0.6	0.1	59.8
12	UCM-curtisc	11806078		⬆ 1					99.3	0.7
13	szerverem.hu	11571725	⬆ 2	⬆ 2	⬆ 1		3.7	28.9	60.3	3.2	3.9
14	More Power!!!	11054606	⬇ 4	⬇ 5	⬇ 1		17.2	71.0	2.5	1.5	7.8
15	TeamUK	7110897	⬇ 1	⬇ 1			47.3	3.6	19.2	1.4	28.3	0.1
16	Porta Kruse	6410714					2.0	0.4			91.3	6.1
17	GPU to 72	4734446					52.2	27.1	0.4	3.9	16.1
18	Numberphile	2748870	⬆ 1	⬆ 1			24.0	44.8	22.7	6.5	1.6
19	tsc	2682018	⬆ 2	⬆ 1			74.5	4.3	1.2	0.4	19.6
20	UW Eau Claire	2547717	⬆ 31	⬆ 3	⬆ 1		87.8		8.9	3.3
21	SpongeBob SquarePants	2411833	⬇ 3	⬇ 3	⬇ 1			31.1	58.8	10.1
22	UKRAINE	2174477		⬇ 1			20.9	11.3	52.3	15.3
23	Wikipedia	2035890		⬇ 1			60.1	32.7	4.2	2.1	0.8
24	Argentina	1549564	⬆ 208	⬆ 43	⬆ 6	⬆ 2	92.4		7.6
25	Dutch Power Cows	1530704	⬇ 5	⬇ 1	⬇ 1	⬇ 1	31.1	25.5	1.5	1.6	40.3
26	GIMPS.USA	1483314	⬇ 1	⬇ 1	⬇ 1	⬇ 1	9.5	0.5	4.5	1.4	83.9
27	GIMPS.Japan	1329852	⬇ 1		⬇ 1		6.2		9.4	2.5	81.9
28	Swedes Of Primes	1304691	⬇ 4	⬇ 2	⬇ 1		0.5	80.9	15.8	2.8
29	GIMPS.Occitania	1206480	⬇ 2	⬇ 1	⬇ 1			4.4				95.6
30	GIMPS.Korea	944793	⬆ 4	⬇ 1	⬇ 1		89.3	4.9	4.7	0.9	0.1
31	MBAi.Cloud	778516	⬇ 1	⬇ 1					99.9	0.1
32	MATHSareREAL	620537	⬇ 3	⬇ 1			96.1		2.7	1.2
33	citizenscience.ru	544560					87.5	3.6	4.4	1.1	2.9	0.5
34	MOXA	483406	⬇ 6	⬇ 2			99.0		0.6	0.4
35	Buhr	462433					56.2	3.8	18.5	5.5	16.0
36	Rechenkraft.net	415496	⬇ 5	⬇ 2			2.4	55.9	4.3	5.6	31.8
37	Terry Kim Team	409284	⬇ 5	⬇ 1			96.8		2.3	0.7
38	S485122	307903	⬇ 2	⬇ 1				95.0		5.0
39	Colorado School of Mines	277566	⬆ 20		⬆ 1		92.9		5.5	1.6
40	Smoke-it	265746	⬇ 3	⬇ 2	⬇ 1		90.5	7.1	1.8
41	YahsTeam	221225	⬇ 3				88.2		10.0	1.8
42	404 - "Primes not Found"	216848	⬆ 13	⬆ 3	⬆ 2		86.3		13.5	0.2
43	randomteam	208173	⬆ 1	⬇ 3	⬇ 1						100.0
44	GIMPS Team Philippines	203311	⬇ 2	⬇ 2	⬇ 1		63.6		6.2	1.8	25.5
45	NerdyGirls	202343	⬇ 6	⬇ 2				42.0	7.2	50.8
46	nranks	198894		⬇ 2			37.3	0.6	3.6	0.4	58.1
47	Canada	188116	⬇ 7	⬇ 1				2.5	68.3	29.0
48	Team Tartan	181817	⬇ 7	⬇ 1					77.1	22.9
49	OverclockerAustralia	151465	⬇ 2	⬇ 1			58.0		20.6	17.9
50	GIMPS.NZ	128930	⬇ 1	⬆ 2			79.7		10.3	10.0
51	NanJing Tech	127993	⬆ 48	⬆ 13	⬆ 2		22.6		71.9	5.5
52	Team China	123275	⬇ 4	⬇ 1		⬆ 1			99.7	0.3
53	Unicamp	123240	⬆ 3		⬇ 2	⬇ 1	70.3	0.1	24.9	4.7
54	BitMEX Research	112047	⬇ 9	⬇ 5		⬆ 1			95.8	4.2
55	GIMPS China	112001	⬇ 12	⬇ 5		⬇ 1	90.9		4.6		4.2
56	GIMPS.France	110116	⬆ 5		⬆ 1		10.1	63.0	5.1	9.0	12.6
57	SASAKI	108336	⬇ 5	⬇ 3	⬇ 1		100.0
58	Wisconsin	96321	⬇ 5	⬇ 1			45.5		30.1	24.4
59	Cap'n Entropy's Cavalcade of Wonderment	89844	⬇ 9	⬇ 1			74.7	6.0	16.9	2.4
60	EgyptianPolymaths	87899	⬇ 6	⬇ 5				49.1			43.6
61	AMD Users	86088	⬆ 10	⬆ 1	⬆ 1		54.2	0.7	11.0	33.6	0.4
62	UIUC	84232	⬆ 4	⬇ 2	⬇ 1				68.6	31.3
63	IOTA	80911	⬆ 111	⬆ 10	⬆ 2	⬆ 1	95.9		2.1	2.0
64	SHADO	80881	⬇ 1	⬇ 5	⬇ 1	⬇ 1			63.6	17.4	11.3	1.9
65	Net-Work	77057	⬇ 3	⬇ 4	⬇ 1		4.1	1.9			86.6
66	Eratosthenes Sieve	75810	⬆ 1	⬇ 3			0.7		95.4	3.8
67	Esperanto	69875	⬇ 2	⬇ 2				25.2	6.8	67.8	0.2
68	Wile E. Coyote	68008	⬆ 10	⬆ 1					75.3	1.2	23.4
69	AJ	66265	⬆ 5	⬇ 1					75.3	24.7
70	Team_Italia	60820	⬆ 3		⬆ 1		2.8		70.8	20.5	2.1	3.2
71	ParadoxZ Commando	60206	⬆ 1		⬆ 1				73.3	26.7
72	S147127	59071	⬆ 4	⬆ 3	⬆ 2		28.7		15.2	56.1
73	Team Israel	58480	⬇ 3	⬇ 1			96.4		2.7	0.9
74	Hungary	53182	⬇ 16	⬇ 8	⬇ 4		0.4		3.1	2.4	93.6
75	ComputerraRU	50876	⬆ 2	⬆ 2	⬆ 2	⬆ 2	20.2		70.5	9.3
76	Brno University of Technology	50646	⬇ 8		⬇ 1			13.6	69.8	16.6
77	GIMPS.NEO	50444	⬇ 8	⬇ 3	⬇ 1	⬇ 2			78.5	21.5
78	Team Belgium	47317	⬇ 3				1.1	7.6	34.8	17.1	39.3
79	GIMPS.Portugal	43061	⬆ 30	⬆ 28	⬆ 8		35.9	50.6		13.5
80	Team Viet Nam	42563	⬇ 1		⬇ 1		28.7		31.3	29.1	10.9
81	HardOCP	36962	⬆ 5	⬆ 2					74.0	26.0
82	LTT fans	36551	⬇ 18	⬇ 3	⬇ 2	⬆ 1	22.9		2.1		75.0
83	Debian	36460	⬆ 4	⬆ 1	⬇ 1	⬇ 1			98.5	1.5
84	Turku	36285	⬆ 28	⬇ 3	⬇ 1				100.0
85	huskers-gimps	35130	⬆ 3		⬇ 1				73.9	26.1
86	Team H	34764	⬇ 2		⬇ 1		12.8		86.6	0.6
87	VIPR	32620	⬆ 29	⬆ 5	⬆ 1	⬆ 1	73.2		16.9	9.8
88	Hermessz	31893	⬇ 3	⬇ 1	⬇ 2	⬇ 1	65.7		34.3
89	ᕙ(⇀‸↼‶)ᕗ	30349	⬆ 5	⬆ 2			0.7		98.9	0.4
90	Small-Team-2000	29644	⬇ 1	⬇ 1	⬆ 1				10.6	89.4
91	socal_prime	28408	⬇ 8	⬇ 1	⬇ 1				71.3	28.5	0.1
92	MES-Team	25948	⬇ 11	⬇ 4			71.3	7.3		21.4
93	Channel 4	25624	⬆ 4	⬆ 2					83.4	16.6
94	The Fellowship of Infinity	24196	⬆ 6		⬆ 2	⬆ 1			99.5	0.5
95	Team Austria	24137	⬇ 15	⬇ 13	⬇ 1	⬇ 1	92.0	0.9	7.1
96	Costa Rica	23806	⬇ 6		⬇ 1				75.2	24.5
97	MurrayInfoSys	21207	⬆ 11		⬆ 1				67.1	32.9
98	Team Retired	19307	⬇ 5		⬆ 1	⬆ 1			28.4	11.0
99	A Single Engineer	18871	⬇ 1	⬆ 1	⬆ 2	⬆ 1			74.0	26.0
100	LimePrime	18866	⬇ 18	⬇ 7	⬇ 3	⬇ 2		7.5	82.8	9.7
101	PrimitiveRootsCircle	17675	⬇ 5	⬇ 2	⬇ 1		20.5		49.2	27.6	2.7
102	Georgia Tech	17112	⬇ 45	⬆ 7	⬆ 1				100.0
103	SpartaAlumni	16839	⬇ 1	⬇ 2	⬇ 1				69.4	30.5
104	GIMPS Romania	14849	⬆ 41	⬆ 39	⬆ 6		64.4		32.0	3.5
105	Spain	14423	⬆ 2		⬇ 1				64.9	35.1
106	SETI.Germany	14419	⬆ 11	⬆ 2	⬇ 1			6.6	22.0	71.4
107	Ozzie Prime	14352	⬇ 4	⬇ 5	⬇ 1			4.1	38.5	16.9		40.6
108	NUST	14223	⬆ 17	⬆ 2	⬇ 1		16.4	74.6	5.9	3.0
109	Nerdfighters for Mersenne Primes	14100	⬇ 5	⬇ 5	⬆ 2				88.7	11.3
110	Aiblspitz	13883	⬆ 24	⬆ 9	⬆ 2		1.2	74.9	11.4	11.3	1.2
111	Team Finland	13648	⬇ 51	⬆ 1	⬇ 2		0.9		97.1		2.0
112	Portland State University	13620	⬇ 17	⬇ 1	⬇ 4			33.3	52.8	13.9
113	moeses	13372	⬇ 3	⬆ 3	⬆ 3				99.1	0.8
114	Team Norway	12969	⬇ 22	⬇ 11	⬇ 1		80.7			3.9	15.2
115	Quantus	12418	⬇ 14	⬇ 9	⬇ 1		9.8		12.7	26.6		50.9
116	Com Systems (RU)	12113	⬆ 21	⬆ 7	⬆ 1				64.3	35.6
117	Team Slovenia	11911	⬇ 12	⬇ 3	⬇ 2				71.9	28.1
118	MadPoo	11152	⬇ 27	⬇ 3				42.1		57.9
119	FREE ROBUX	10852	⬆ 2	⬆ 1	⬆ 1				100.0
120	Royal Military College of Canada	10691	⬆ 3	⬆ 2	⬆ 1		89.7		7.9	2.4
121	Mensa	10482	⬇ 2	⬇ 8	⬆ 2				89.9	10.0
122	RobotechResearch	10239	⬆ 64	⬆ 4	⬆ 5				47.1	52.9
123	Politeknik Banting, Selangor	10103	⬇ 12	⬇ 6	⬇ 1		89.4		7.8	2.8
124	Granada	10096	⬇ 11	⬇ 3			31.0		15.5	52.8
125	GIMPS.Taiwan	10073	⬇ 19	⬇ 7	⬇ 6				86.7	12.8	0.1
126	Syntony	9517	⬆ 3	⬇ 1	⬇ 1					100.0
127	TurkishMath	9477	⬆ 4	⬆ 6	⬇ 1				83.7	16.3
128	JiBoTeam	9117	⬇ 1	⬆ 4		⬆ 1				100.0
129	Shaffer's Studio	8870	⬇ 1	⬆ 1	⬆ 1	⬆ 1			87.6	12.3
130	Triangle	8632		⬆ 1	⬆ 4	⬆ 3			99.1	0.9
131	Die Zeitfinder	8558	⬇ 9	⬇ 4	⬇ 2	⬇ 3			90.9	9.1
132	Abacus	7922	⬇ 12	⬆ 3	⬆ 1				98.9	1.1
133	Hyperion	7803	⬇ 19	⬇ 4	⬇ 1	⬆ 1				24.5
134	math.auth.gr	7704	⬆ 59	⬆ 51	⬆ 1	⬆ 1			100.0
135	Team Splunk	7605	⬆ 1	⬆ 2	⬆ 1	⬆ 1		28.1	71.9
136	University of Waterloo	7519	⬆ 6	⬆ 2	⬆ 1	⬆ 1			100.0
137	Prime Rib	7347	⬆ 3	⬆ 4	⬆ 2	⬆ 1			96.7	3.2
138	Server66	7322	⬇ 6	⬇ 14		⬆ 1	100.0
139	FreeBSD	7242	⬇ 13	⬇ 11	⬇ 8	⬇ 8			76.1	23.9
140	Brasil	6706	⬇ 2		⬆ 1				81.5	18.4
141	irowiki	6573	⬇ 6	⬇ 2	⬇ 1					100.0
142	SU Prime Pirates	6437	⬇ 1						61.5	38.5
143	Team Christensen	5807		⬆ 1						100.0
144	Elisabeth-von-Thadden-Schule	5505		⬆ 1					42.1	57.9
145	youngfun429	5433	⬇ 27	⬇ 9					56.8	43.2
146	FactorMania	5317	⬆ 19	⬆ 10	⬆ 6	⬆ 1		58.0			42.0
147	MES22-Team	5150	⬇ 32	⬇ 13	⬇ 1	⬇ 1	100.0
148	nmbarek_team	4953	⬇ 24						99.8	0.2
149	Crunching@EVGA	4888	⬆ 36	⬆ 6	⬆ 1				99.7	0.3
150	Furry Primes	4733	⬇ 17	⬇ 4	⬇ 1		76.1			23.9
151	Danpi for GIMPS	4710	⬇ 1		⬆ 2		100.0
152	Hong Kong GIMP	4698	⬇ 1	⬇ 2	⬆ 2				66.6	33.4
153	The_Dude_Abides	4594	⬇ 6	⬇ 4	⬇ 2		33.2			57.9
154	teamMALI	4384	⬇ 6	⬇ 7	⬇ 7				71.2	28.8
155	México mágico	4207	⬆ 9	⬇ 1					75.3	24.7
156	Olympic College	4079	⬆ 1	⬇ 4						100.0
157	Noam Karni Team	3962	⬆ 14		⬆ 1				79.7	20.3
158	zeit	3810	⬇ 9	⬇ 5	⬇ 1		2.0			98.0
159	Phi Kappa Theta	3650	⬇ 1	⬆ 4					66.2	33.8
160	Korea.Prime	3645	⬆ 13	⬇ 1					64.5	35.5
161	GIMPS.Hong Kong	3622	⬇ 2	⬆ 3			1.6		65.7	32.7
162	Kabylie	3201	⬇ 6	⬇ 4			16.2	3.6	48.7	31.5
163	Team_Brazil	2999	⬇ 1	⬇ 1			83.1	0.2		16.7
164	Arpan Sen Labs	2914	⬆ 68	⬆ 9					43.5	56.4
165	KnightLight	2786	⬆ 48	⬆ 39						99.9
166	Pi Rho	2499	⬆ 41		⬆ 2				67.1	32.9
167	3DCenter.org	2433	⬇ 14	⬇ 6	⬇ 1						100.0
168	GIMPSMalaysia	2394	⬆ 8	⬇ 1	⬆ 1				66.8	33.2
169	VRS_SE	2364	⬆ 3	⬇ 1	⬆ 1				66.7	33.3
170	GIMPS_KS	2199	⬆ 8		⬆ 2				36.5	62.0	1.4
171	Morocco	2183	⬆ 38	⬆ 17	⬆ 2				38.5	61.5
172	WSU Cougars	2169	⬇ 33	⬇ 12	⬇ 1				70.8	29.1
173	I Love Canadian Natural Resources	2012	⬇ 10	⬇ 8	⬇ 6					100.0
174	The Prime Pioneers	1919	⬇ 4					100.0
175	The Pensis	1869	⬆ 4	⬆ 1						100.0
176	Obsidian	1700	⬆ 5	⬇ 5	⬆ 1	⬆ 1				100.0
177	GIMPS_IOM	1689	⬆ 5	⬆ 1	⬇ 1	⬇ 1	100.0
178	YESHUA IS THE MESSIAH	1657	⬆ 54	⬆ 44					99.1	0.9
179	Subprime Searches	1614	⬇ 12	⬇ 4			84.2			15.8
180	F=dp/dt	1589		⬇ 3					99.6	0.4
181	San Francisco	1586	⬆ 6	⬇ 2					100.0
182	hreid	1575	⬆ 18	⬆ 15	⬆ 12				100.0
183	cr_colorado	1549	⬆ 5	⬇ 1	⬇ 1					100.0
184	Zorin OS Crew	1469	⬇ 23	⬇ 1	⬇ 1				52.5	47.5
185	CZAsTc	1448	⬆ 6	⬇ 1	⬇ 1				99.5	0.4
186	TunisianTeam	1031	⬇ 26	⬇ 14	⬇ 1				75.0	25.0
187	Therian Primes	1007	⬆ 29	⬆ 2	⬇ 1			14.6		52.4	33.0
188	His Dark Materials	983	⬇ 4	⬇ 2	⬇ 1					44.4	55.5
189	Czech National Team	906	⬆ 14	⬇ 2	⬇ 1		4.1		91.4	1.2	2.0
190	TimE4This	876		⬆ 2	⬇ 1					100.0
191	AWC	801	⬆ 41	⬆ 2	⬇ 1				100.0
192	GIMPS Asturias	794	⬆ 4	⬆ 2	⬇ 1				99.6	0.4
193	Weatopians	793	⬆ 4	⬆ 2	⬇ 1				99.7	0.3
194	International School of Beijing (ISB)	777	⬇ 42	⬇ 13	⬇ 1				98.8	1.2
195	Saudi Primes	757	⬇ 20	⬇ 26						100.0
196	Optimists Prime	727	⬇ 50	⬇ 6				100.0
197	Join Us 😈	708	⬆ 7	⬆ 1			100.0
198	SGDynamo Dresden	565	⬆ 8	⬆ 1	⬆ 1		100.0
199	PrimeObsession	539	⬆ 9	⬆ 1	⬆ 1	⬆ 1				100.0
200	alan145	526	⬇ 23	⬇ 9	⬇ 2	⬇ 1	100.0
201	London Computation Club	478	⬆ 9							100.0
202	Team Dominik Radler	351	⬆ 9				100.0
203	Yurunago	276	⬆ 29	⬆ 2						100.0
204	Vegan	275	⬆ 28	⬆ 18						100.0
205	Byberg Nordic Prime	265	⬇ 6	⬇ 9						100.0
206	www.Adamek.biz	265	⬆ 9							100.0
207	Math Teachers of the World	259	⬆ 10		⬆ 1				100.0
208	GIMPS Hams	253	⬆ 10		⬆ 1			100.0
209	DividerHunt	221	⬆ 12		⬆ 1		100.0
210	Manri Costa Rica	213	⬇ 15		⬆ 1					100.0
211	30thousandwon	193	⬆ 13		⬆ 1					100.0
212	/r/counting	184		⬇ 9	⬇ 5
213	miiro	150	⬆ 19		⬆ 1		100.0
214	Team Bulgaria	137	⬇ 9	⬇ 2	⬇ 1						100.0
215	GIMPS.Peace	122	⬆ 10	⬇ 1			44.7	55.3
216	TeamUbuntu	121	⬆ 10	⬇ 1						100.0
217	sannerud.com	108	⬆ 13	⬇ 1			43.1				19.4	37.5
218	PROMYS	23	⬆ 11								100.0
219	PARG team	21	⬆ 13								100.0
220	ANDY	9	⬇ 66	⬇ 40						98.4
221	yfinder	1	⬆ 1							100.0