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 2026-05-21 14:00 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	710541624					0.2		0.1		99.7
2	Slovakia	703025312					0.1	98.9	0.1		0.9
3	POLAND	131664621		⬆ 1			0.8	96.3	0.4	0.1	2.4
4	Ars Technica Team Prime Rib	127601568	⬆ 2	⬆ 2				99.1		0.8
5	PrimeNet	122294985	⬇ 1	⬇ 2			0.2	98.1	0.7	1.0
6	-Too many Ones-	63441281	⬇ 1	⬇ 1			0.1	76.2			23.6
7	GIMPSChina	21614252	⬆ 1	⬆ 1			65.8	21.1	4.2	0.5	8.2
8	szerverem.hu	14978769	⬆ 7	⬆ 5	⬆ 1		2.8	24.0	67.7	2.5	3.0
9	One Man Team	13934484			⬆ 1			99.5	0.5
10	GW's legions	13596562	⬆ 1		⬆ 1			0.8	36.1	1.5	61.4
11	Team-Deutschland	11801760	⬆ 2		⬆ 1		2.7	50.8	0.7	0.1	45.6
12	UCM-curtisc	11751804			⬆ 1				99.3	0.7
13	More Power!!!	10820956	⬇ 3	⬆ 1	⬆ 1		17.2	70.4	2.6	1.9	7.9
14	TeamUK	7147482		⬆ 1	⬆ 1		48.9	2.9	18.9	1.5	27.7	0.1
15	Porta Kruse	6396992	⬆ 1	⬆ 1	⬆ 1		2.0	0.5			91.2	6.1
16	GPU to 72	4722128	⬆ 1	⬆ 1	⬆ 1	⬆ 1	51.2	27.6	0.5	4.0	16.5
17	Numberphile	3918656	⬆ 2	⬆ 1	⬆ 1	⬆ 1	16.0	33.1	16.1	4.5	30.0
18	UW Eau Claire	2991044	⬆ 10	⬆ 3	⬆ 1	⬆ 1	89.2		7.9	2.9
19	unRAID	2987251	⬇ 12	⬇ 12	⬇ 11	⬇ 3		96.4	3.2	0.2	0.1
20	tsc	2792634		⬇ 1			70.3	3.8	1.1	0.4	24.4
21	Argentina	2356886	⬆ 210	⬆ 8			93.0		7.0
22	UKRAINE	2291809	⬇ 1		⬆ 1		16.6	9.1	61.1	13.2
23	SpongeBob SquarePants	2115917	⬇ 5	⬇ 3	⬇ 1			30.4	58.6	11.0
24	Wikipedia	1981251	⬇ 1	⬇ 1			58.7	33.6	4.6	2.1	0.8
25	Swedes Of Primes	1247347	⬇ 1	⬆ 2	⬆ 2		0.5	79.8	16.8	2.8
26	GIMPS.Occitania	1204732	⬆ 1	⬆ 2	⬆ 2			4.4				95.6
27	Dutch Power Cows	1141259	⬇ 5	⬇ 3	⬇ 2		40.7	16.7	1.9	2.3	38.4
28	GIMPS.Korea	1093259	⬆ 4	⬆ 2	⬆ 1		88.9	4.9	4.3	0.9	0.8
29	MBAi.Cloud	835968	⬆ 2	⬆ 2	⬆ 1				99.9	0.1
30	MATHSareREAL	578886		⬆ 2	⬆ 1		96.2		2.5	1.3
31	citizenscience.ru	521886	⬆ 4	⬆ 2	⬆ 1		88.1	3.3	4.6	0.8	3.0	0.3
32	Buhr	473928	⬆ 4	⬆ 3	⬆ 1		54.8	4.4	17.6	5.5	17.7
33	GIMPS.Japan	447737	⬇ 7	⬇ 7	⬇ 7		20.8		27.7	7.8	43.6
34	Rechenkraft.net	402444	⬇ 1	⬆ 2	⬆ 1		1.4	55.5	4.9	5.9	32.4
35	MOXA	393616	⬇ 6	⬇ 1	⬇ 1		98.9		0.8	0.3
36	Terry Kim Team	385970	⬇ 2	⬆ 1			96.0		2.9	0.7
37	Colorado School of Mines	323194	⬆ 13	⬆ 2			92.7		6.0	1.3
38	S485122	306135	⬇ 1					95.1		4.9
39	Smoke-it	265620	⬇ 1	⬆ 1			90.5	7.1	1.8
40	404 - "Primes not Found"	262186	⬆ 7	⬆ 3			82.1		17.7	0.2
41	nranks	238694	⬇ 1	⬆ 5			31.5	0.5	3.0	0.4	64.7
42	GIMPS.USA	235731	⬇ 17	⬇ 17	⬆ 1		59.8	3.5	26.5	7.7	2.0
43	YahsTeam	232137	⬇ 4	⬇ 2	⬇ 1		87.7		10.2	2.1
44	NerdyGirls	201372	⬇ 2	⬆ 1	⬆ 1			42.2	7.3	50.6
45	GIMPS Team Philippines	201290	⬇ 4	⬇ 1	⬇ 1		58.7		7.8	1.7	28.4
46	Canada	182423	⬇ 3	⬆ 1				2.3	69.2	28.5
47	NanJing Tech	181270	⬆ 51	⬆ 6	⬆ 2		28.6		67.5	3.9
48	Team Tartan	179711	⬇ 3		⬇ 1				76.8	23.2
49	OverclockerAustralia	152444			⬆ 1		57.6		19.9	19.0
50	randomteam	140733	⬇ 6	⬇ 8	⬇ 2						100.0
51	GIMPS.NZ	132149	⬆ 1	⬇ 1			79.9		10.0	10.0
52	Team China	126915	⬇ 1	⬇ 1					99.7	0.3
53	Unicamp	124714	⬆ 2	⬇ 1			69.5		25.9	4.6
54	GIMPS.France	119900	⬆ 5	⬆ 3			9.3	66.4	4.7	7.9	11.5
55	SASAKI	104494	⬇ 2	⬆ 1			100.0
56	GIMPS China	103076	⬇ 10	⬇ 1			90.1		5.0		4.6
57	GIMPS.Portugal	99542	⬆ 52	⬆ 25	⬆ 4		42.9	52.2		4.9
58	IOTA	99056	⬆ 32	⬆ 6			94.9		3.4	1.7
59	BitMEX Research	95129	⬇ 11	⬇ 5	⬇ 2				95.0	5.0
60	Wisconsin	92025	⬇ 3	⬇ 2	⬇ 1		42.1		31.5	26.4
61	AMD Users	91022	⬆ 5		⬇ 1		51.2	0.7	10.5	37.2	0.4
62	UIUC	86599	⬆ 1						68.7	31.3
63	Cap'n Entropy's Cavalcade of Wonderment	82255	⬇ 7	⬇ 3			72.7	6.6	18.5	2.3
64	Net-Work	77402	⬇ 2	⬆ 1			4.8	1.9			86.4
65	SHADO	74437	⬇ 5	⬇ 2	⬆ 1				59.9	19.7	12.2	1.8
66	Eratosthenes Sieve	73696	⬇ 2		⬆ 1	⬆ 1	0.7		95.3	3.9
67	EgyptianPolymaths	73287	⬇ 13	⬇ 8	⬇ 2	⬇ 1		58.9			29.6
68	Wile E. Coyote	73256	⬆ 9						75.8	0.5	23.7
69	Esperanto	66880	⬇ 4	⬇ 2				26.2	4.8	68.8	0.2
70	AJ	65291	⬇ 1	⬇ 1					75.2	24.8
71	S147127	62499	⬆ 5	⬆ 2			29.7		18.1	52.1
72	Team Israel	60496	⬇ 5				96.9		2.6	0.4
73	ParadoxZ Commando	59824	⬇ 2	⬇ 2					73.8	26.2
74	Team_Italia	53474		⬇ 4			3.2		65.4	24.8	2.4	3.4
75	Hungary	52594	⬇ 17	⬇ 1					3.1	1.9	94.7
76	Brno University of Technology	48078	⬇ 3		⬆ 2			9.3	71.9	18.7
77	ComputerraRU	47886	⬆ 1		⬇ 1		21.5		68.6	9.8
78	GIMPS.NEO	47770	⬇ 10	⬇ 3	⬇ 1				78.2	21.8
79	Team Belgium	43195	⬇ 4	⬇ 1			1.2	6.4	29.4	19.9	43.1
80	Team Viet Nam	41552	⬇ 1	⬇ 1			29.4		32.0	27.4	11.2
81	VIPR	38326	⬆ 25	⬆ 7	⬆ 1		80.6		12.4	7.0
82	HardOCP	36707	⬆ 3	⬇ 2	⬇ 1				74.5	25.5
83	Turku	36285	⬆ 9	⬆ 1					100.0
84	huskers-gimps	35914	⬆ 3	⬆ 1		⬆ 1			74.5	25.5
85	Team H	35361	⬇ 3	⬆ 1		⬇ 1	12.9		86.6	0.5
86	Debian	33893	⬆ 2	⬇ 5					99.0	1.0
87	ᕙ(⇀‸↼‶)ᕗ	32333	⬆ 6	⬆ 2	⬆ 2		0.7		99.0	0.4
88	Hermessz	31137	⬇ 5	⬇ 1	⬇ 1		64.8		35.2
89	baraCUDA	29906	⬆ 142	⬆ 133	⬆ 15				100.0
90	Small-Team-2000	29675	⬇ 1		⬇ 2				10.6	89.4
91	socal_prime	26386	⬇ 5			⬆ 2			71.0	28.8	0.1
92	Channel 4	25750	⬆ 2	⬆ 1					80.5	19.5
93	The Fellowship of Infinity	24987	⬆ 2	⬆ 3		⬆ 1			99.5	0.5
94	Costa Rica	23837	⬇ 3	⬆ 1	⬆ 1	⬆ 2			75.2	24.4
95	MurrayInfoSys	23775	⬆ 6	⬆ 2	⬆ 1	⬆ 2			68.5	31.5
96	MES-Team	23762	⬇ 12	⬇ 4	⬇ 2	⬇ 1	73.9	6.8		19.3
97	LTT fans	22365	⬇ 27	⬇ 14	⬇ 7	⬇ 6	37.5				62.5
98	Georgia Tech	20319	⬇ 37	⬆ 5	⬇ 1				100.0
99	Team Retired	18993	⬇ 3		⬇ 1				28.9	11.2
100	A Single Engineer	18470	⬇ 1	⬆ 1	⬇ 1				75.7	24.3
101	SpartaAlumni	18233	⬇ 1	⬆ 1	⬇ 1				68.6	31.4
102	GIMPS Romania	18140	⬆ 41	⬆ 2	⬇ 1		70.9		26.2	2.9
103	Aiblspitz	17445	⬆ 29	⬆ 9			0.2	77.9	9.1	12.3	0.6
104	PrimitiveRootsCircle	17033	⬇ 7	⬇ 4	⬇ 2		18.9		51.1	27.2	2.8
105	LimePrime	15012	⬇ 24	⬇ 7				9.4	78.4	12.2
106	Portland State University	14476	⬇ 3	⬆ 3	⬆ 1			31.5	55.5	13.0
107	NUST	14223	⬆ 10	⬆ 1	⬆ 1		16.4	74.6	5.9	3.0
108	Com Systems (RU)	14208	⬆ 25	⬆ 9	⬆ 4				65.9	34.1
109	Ozzie Prime	14002	⬇ 1	⬇ 2				3.0	39.4	17.2		40.3
110	Spain	13918	⬆ 1	⬇ 5					67.3	32.7
111	moeses	13367	⬆ 2	⬆ 5					99.1	0.8
112	Nerdfighters for Mersenne Primes	13188	⬇ 5	⬇ 1	⬆ 2	⬆ 1			89.5	10.5
113	Team Slovenia	12416	⬇ 1	⬆ 2	⬆ 3	⬇ 1			69.0	31.0
114	Quantus	12170	⬇ 9		⬆ 1		10.0		13.0	25.1		51.9
115	Team Finland	12069	⬇ 43	⬇ 5	⬇ 2		1.0		96.8		2.2
116	TurkishMath	11994	⬆ 19	⬆ 10	⬆ 3				87.1	12.9
117	RobotechResearch	11545	⬆ 22	⬆ 10		⬆ 1			48.6	51.4
118	SETI.Germany	11194	⬇ 8	⬇ 12		⬆ 1		8.5	14.2	77.4
119	FREE ROBUX	10852	⬆ 2		⬆ 1	⬆ 1			100.0
120	Royal Military College of Canada	10691	⬆ 2		⬆ 2	⬆ 1	89.7		7.9	2.4
121	Granada	10418	⬇ 3	⬆ 2		⬆ 1	27.6		22.7	49.0
122	Team Austria	10341	⬇ 42	⬇ 28	⬇ 16	⬇ 5	81.5	2.0	16.5
123	GIMPS.Taiwan	10152	⬇ 9	⬆ 1	⬆ 1				86.9	12.6	0.1
124	Syntony	9602	⬆ 2	⬆ 1	⬆ 1					100.0
125	Team Norway	9411	⬇ 21	⬇ 12	⬇ 2		78.1			5.4	16.2
126	Mensa	8910	⬇ 7	⬇ 5	⬆ 1				88.2	11.8
127	Shaffer's Studio	8831	⬆ 2	⬆ 3	⬆ 1				88.2	11.7
128	JiBoTeam	8715	⬇ 1		⬇ 2					100.0
129	University of Waterloo	8354	⬆ 11	⬆ 8	⬆ 1				100.0
130	Triangle	7873		⬆ 4	⬆ 3				98.9	1.0
131	Die Zeitfinder	7790	⬇ 3	⬇ 2	⬇ 2				90.0	10.0
132	math.auth.gr	7704	⬆ 55	⬆ 3	⬆ 2				100.0
133	Team Splunk	7605	⬆ 5	⬆ 3	⬆ 2			28.1	71.9
134	FreeBSD	7519	⬇ 10	⬇ 3	⬆ 4				73.6	26.4
135	Abacus	7132	⬇ 15	⬇ 3	⬇ 4				98.9	1.1
136	Brasil	7029	⬆ 5	⬆ 4	⬆ 1				78.1	21.8
137	Hyperion	6962	⬇ 21	⬇ 4	⬇ 1					19.5
138	Prime Rib	6563	⬇ 1		⬆ 1	⬆ 1			96.4	3.6
139	irowiki	6496	⬇ 3	⬆ 2	⬆ 1	⬇ 1				100.0
140	FactorMania	6364	⬆ 17	⬆ 11	⬆ 3			58.7			41.3
141	MadPoo	6207	⬇ 39	⬇ 23				75.7		24.3
142	Team Christensen	5881	⬆ 4	⬆ 1						100.0
143	México mágico	5795	⬆ 18	⬆ 13	⬆ 12				82.0	18.0
144	Elisabeth-von-Thadden-Schule	5505	⬆ 1						42.1	57.9
145	Politeknik Banting, Selangor	5263	⬇ 30	⬇ 23	⬇ 13		79.6		15.0	5.4
146	KnightLight	5257	⬆ 64		⬇ 1					100.0
147	nmbarek_team	4951	⬆ 1	⬆ 1					99.8	0.2
148	teamMALI	4927	⬆ 3	⬆ 7					79.5	20.5
149	Crunching@EVGA	4888	⬆ 9						99.7	0.3
150	Arpan Sen Labs	4825	⬆ 81	⬆ 15	⬆ 8	⬆ 5			60.4	39.6
151	Pavlicin	4809	⬆ 80	⬆ 71	⬆ 72	⬇ 1	99.8	0.2
152	Danpi for GIMPS	4710		⬆ 1	⬇ 2	⬇ 1	100.0
153	Korea.Prime	4695	⬆ 17	⬆ 8	⬇ 1				67.0	33.0
154	Hong Kong GIMP	4694	⬇ 4		⬇ 3	⬇ 2			66.7	33.3
155	SU Prime Pirates	4683	⬇ 13	⬇ 13	⬇ 9	⬇ 1			84.6	15.4
156	The_Dude_Abides	4375	⬇ 9	⬇ 4	⬇ 2		12.3			73.2
157	Olympic College	4079	⬇ 4		⬇ 1					100.0
158	Noam Karni Team	3962	⬆ 2	⬆ 1	⬇ 1				79.7	20.3
159	Server66	3762	⬇ 28	⬇ 20			100.0
160	Phi Kappa Theta	3653	⬆ 3						66.2	33.8
161	GIMPS.Hong Kong	3618	⬇ 2	⬆ 1			1.6		65.8	32.6
162	zeit	3542	⬇ 13	⬇ 4			7.3			92.7
163	Furry Primes	3472	⬇ 29	⬇ 13	⬇ 10		85.2			14.8
164	YESHUA IS THE MESSIAH	3366	⬆ 67	⬆ 14	⬇ 1				99.3	0.7
165	MES22-Team	3277	⬇ 42	⬇ 18	⬇ 1		100.0
166	Morocco	3242	⬆ 23	⬆ 7	⬆ 3				50.5	49.5
167	Kabylie	3113	⬇ 13	⬇ 4	⬇ 2		15.2	2.4	50.0	32.4
168	Team_Brazil	2999	⬇ 6	⬇ 4	⬇ 2		83.1	0.2		16.7
169	Pi Rho	2499	⬇ 3	⬇ 1	⬇ 1				67.1	32.9
170	GIMPSMalaysia	2394	⬇ 2	⬇ 1					66.8	33.2
171	VRS_SE	2364	⬇ 2	⬇ 1					66.7	33.3
172	GIMPS_KS	2199							36.5	62.0	1.4
173	youngfun429	2156	⬇ 48	⬇ 28	⬇ 6				36.2	63.8
174	The Prime Pioneers	1919	⬇ 7		⬆ 1			100.0
175	The Pensis	1869			⬆ 1	⬆ 1				100.0
176	3DCenter.org	1844	⬇ 21	⬇ 10	⬇ 3	⬇ 1					100.0
177	DePaul MAT 141	1692	⬆ 54	⬆ 45	⬆ 14				99.8	0.2
178	San Francisco	1586	⬆ 4	⬆ 3					100.0
179	hreid	1575	⬆ 17	⬆ 3					100.0
180	cr_colorado	1549	⬆ 3	⬆ 3						100.0
181	Obsidian	1542	⬇ 4	⬇ 4						100.0
182	I Love Canadian Natural Resources	1514	⬇ 17	⬇ 15	⬇ 8					100.0
183	CZAsTc	1448	⬆ 2	⬆ 2	⬇ 1				99.5	0.4
184	WSU Cougars	1390	⬇ 40	⬇ 13	⬇ 1				55.3	44.6
185	GIMPS_IOM	1245	⬇ 6	⬇ 9	⬇ 1		100.0
186	Subprime Searches	1226	⬇ 12	⬇ 7	⬇ 1		79.1			20.9
187	Join Us 😈	1060	⬆ 14	⬆ 10	⬇ 1		66.8			33.2
188	TunisianTeam	1031	⬇ 24	⬇ 2	⬇ 1				75.0	25.0
189	Therian Primes	1007	⬆ 13	⬇ 2	⬇ 1			14.6		52.4	33.0
190	Czech National Team	903	⬆ 17	⬇ 1	⬇ 1		4.1		91.8	0.8	2.0
191	TimE4This	876	⬇ 7	⬇ 1	⬇ 1					100.0
192	AWC	801		⬇ 1					100.0
193	F=dp/dt	800	⬇ 17	⬇ 13	⬇ 16				99.3	0.7
194	GIMPS Asturias	794	⬇ 1	⬇ 2	⬇ 1				99.6	0.4
195	Weatopians	793	⬇ 1	⬇ 2	⬇ 1				99.7	0.3
196	Zorin OS Crew	686	⬇ 18	⬇ 12		⬆ 1				100.0
197	His Dark Materials	683	⬇ 17	⬇ 9	⬇ 2	⬇ 1				31.9	68.0
198	SGDynamo Dresden	580	⬆ 5	⬆ 1	⬇ 1		100.0
199	PrimeObsession	539	⬆ 5	⬆ 1	⬇ 1					100.0
200	GIMPS.Romania	422	⬆ 31	⬆ 22	⬆ 23				100.0
201	alan145	390	⬇ 15	⬇ 3	⬇ 1		100.0
202	Optimists Prime	365	⬇ 29	⬇ 6	⬇ 3			100.0
203	PARG team	298	⬆ 28	⬆ 16	⬆ 16					92.8	7.2
204	Team Dominik Radler	290	⬆ 4	⬇ 2	⬇ 3		100.0
205	Yurunago	276	⬆ 7	⬇ 2	⬇ 3					100.0
206	Vegan	275	⬆ 25	⬇ 2	⬇ 3					100.0
207	Byberg Nordic Prime	265	⬇ 12	⬇ 2	⬇ 3					100.0
208	FDY	265	⬆ 23	⬆ 14	⬇ 3					100.0
209	www.Adamek.biz	265	⬆ 5	⬇ 3	⬇ 3					100.0
210	Math Teachers of the World	259	⬆ 5	⬇ 2	⬇ 3				100.0
211	GIMPS Hams	253	⬆ 6	⬇ 2	⬇ 3			100.0
212	DividerHunt	221	⬆ 7	⬇ 2	⬇ 3		100.0
213	Manri Costa Rica	213	⬆ 7	⬇ 2	⬇ 3					100.0
214	30thousandwon	193	⬆ 9	⬇ 2	⬇ 3					100.0
215	/r/counting	184	⬇ 6	⬇ 8	⬇ 3
216	miiro	150	⬆ 8	⬇ 2	⬇ 3		100.0
217	GIMPS.Peace	122	⬆ 8	⬇ 2	⬇ 3		44.7	55.3
218	TeamUbuntu	121	⬆ 8	⬇ 2	⬇ 3					100.0
219	sannerud.com	108	⬆ 11	⬇ 2	⬇ 2	⬆ 1	43.1				19.4	37.5
220	Team Bulgaria	103	⬇ 9	⬇ 7	⬇ 4	⬇ 1					100.0
221	PROMYS	23	⬆ 8	⬇ 3	⬇ 3						100.0
222	yfinder	1	⬇ 1	⬇ 1						100.0
223	ANDY	0	⬇ 42	⬇ 3	⬇ 3