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 2026-07-26 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	Slovakia	590507738	⬆ 1				0.1	97.5	0.1		2.3
2	GIMPS.Russia	296514093	⬇ 1				0.4		0.1		99.4
3	PrimeNet	149942993	⬆ 2	⬆ 1			0.2	80.0	0.6	0.8	18.4
4	Ars Technica Team Prime Rib	147703126	⬆ 2	⬇ 1				99.2		0.7
5	POLAND	112024472	⬇ 2				0.9	95.2	0.4	0.1	3.3
6	-Too many Ones-	64476750	⬇ 2					77.5			22.5
7	Team#1	23007900	⬆ 6	⬆ 1			1.9	16.6	44.1	35.5	2.0
8	GIMPSChina	19126692		⬇ 1			54.7	25.8	4.8	0.7	14.0
9	Numberphile	12580318	⬆ 9	⬆ 4			3.2	17.9	4.9	1.7	72.2
10	UCM-curtisc	12102697	⬆ 2						99.2	0.8
11	Team-Deutschland	11967733					2.3	59.6	1.0	0.2	36.8
12	More Power!!!	10160505	⬆ 2				17.1	69.2	2.8	2.4	8.5
13	TeamUK	6668179	⬆ 2	⬆ 1			46.5	2.6	20.9	1.7	28.1
14	Porta Kruse	6351624	⬆ 2	⬆ 1			2.0	0.5			91.2	6.2
15	GW's legions	5982712	⬇ 5	⬇ 6	⬆ 1		0.1	2.0	88.8	4.0	5.0
16	GPU to 72	5463576	⬆ 1	⬆ 1	⬆ 1		49.1	31.0	1.1	3.4	15.2
17	One Man Team	3663162	⬇ 8	⬇ 1	⬇ 2			98.5	1.5
18	UW Eau Claire	3572753	⬆ 2	⬆ 1			90.9		6.6	2.5
19	tsc	3401120		⬇ 1			61.8	2.5	1.0	0.4	34.4
20	UKRAINE	2797834	⬆ 2				7.1	5.6	77.9	9.4
21	Argentina	2563445	⬆ 3				92.1		7.9
22	Wikipedia	1921894	⬆ 1				57.5	34.7	4.7	2.0	0.8
23	GIMPS.Korea	1527760	⬆ 7	⬆ 1			87.2	4.7	3.7	0.9	3.5
24	GIMPS.Occitania	1187005	⬆ 5	⬆ 1	⬆ 1			4.4				95.6
25	SpongeBob SquarePants	1083940	⬇ 4	⬇ 2	⬇ 1			30.1	64.7	5.2
26	Swedes Of Primes	1025854	⬆ 2				1.5	77.9	17.4	3.2
27	Dutch Power Cows	999956	⬇ 2				44.6	11.4	1.6	2.6	39.8
28	MBAi.Cloud	865089	⬆ 3						99.9	0.1
29	404 - "Primes not Found"	757116	⬆ 13	⬆ 2			91.6		8.4	0.1
30	MATHSareREAL	578886	⬆ 2	⬇ 1			96.2		2.5	1.3
31	Buhr	496865	⬆ 4	⬇ 1			50.0	5.3	16.3	5.3	23.1
32	GIMPS.USA	462142	⬇ 6	⬆ 1			31.4	46.2	15.8	3.9	2.4
33	citizenscience.ru	408559		⬇ 1			86.2	2.1	6.7	1.0	3.7	0.4
34	Colorado School of Mines	404972	⬆ 5	⬆ 1			85.8		12.9	1.3
35	Rechenkraft.net	365423	⬆ 1	⬆ 1			0.2	51.0	6.1	7.0	35.6
36	Terry Kim Team	365157	⬆ 1	⬆ 1			95.6		3.3	0.7
37	MOXA	356459	⬇ 3	⬆ 1	⬆ 1		99.2		0.6	0.1
38	GIMPS.Japan	347435	⬇ 11	⬇ 4	⬇ 1		38.7		35.3	12.4	13.4
39	S485122	303750	⬇ 1	⬆ 1				95.1		4.9
40	nranks	282664	⬆ 6	⬆ 3	⬆ 1		26.3	0.4	2.3	0.3	70.8
41	YahsTeam	241863		⬆ 1	⬇ 1		87.5		10.1	2.3
42	Smoke-it	223020	⬇ 2	⬇ 1	⬆ 1		90.7	7.7	1.4
43	NanJing Tech	216777	⬆ 7	⬆ 1	⬆ 1		24.2		72.4	3.4
44	GIMPS Team Philippines	205694		⬆ 1	⬆ 1	⬆ 1	50.0		10.4	1.9	33.3
45	unRAID	203468	⬇ 38	⬇ 6	⬇ 3	⬇ 1		61.1	34.8	3.5	0.6
46	NerdyGirls	192787	⬇ 1					44.0	5.0	51.0
47	Canada	179785					7.8	1.4	66.4	24.4
48	Team Tartan	170684							77.2	22.8
49	OverclockerAustralia	146561					59.9		14.3	20.3
50	GIMPS.NZ	137672	⬆ 1				79.7	0.2	10.9	9.2	0.1
51	Team China	129425	⬆ 1						99.7	0.3
52	GIMPS.Portugal	129405	⬆ 27	⬆ 5	⬆ 3		49.8	48.4		1.7
53	IOTA	124261	⬆ 10	⬆ 1		⬆ 1	94.6		4.1	1.4
54	Unicamp	124173	⬇ 1	⬇ 2	⬇ 2	⬇ 1	67.3		29.2	3.5
55	GIMPS.France	116369	⬆ 1	⬇ 2	⬇ 1		9.6	68.9	4.2	5.3	11.9
56	VIPR	104962	⬆ 31	⬆ 11			94.5		3.8	1.6
57	AMD Users	95684	⬆ 4	⬇ 1			48.8	0.6	9.1	41.1	0.4
58	UIUC	91873	⬆ 4						66.8	33.2
59	SASAKI	88929	⬇ 2	⬇ 4			100.0
60	Wile E. Coyote	81458	⬆ 8	⬆ 2	⬆ 2				75.4	0.4	24.2
61	SHADO	80234	⬆ 3						63.2	18.2	11.3	1.3
62	Wisconsin	78845	⬇ 4	⬇ 2	⬇ 2		34.6		33.9	31.4
63	GIMPS China	75726	⬇ 9	⬇ 4			83.1		10.4	0.1	6.3
64	Eratosthenes Sieve	74993	⬆ 2		⬆ 1		0.7		95.4	3.8
65	Net-Work	74194		⬇ 2	⬇ 1		5.8	1.3			83.5
66	randomteam	71704	⬇ 23								100.0
67	S147127	68459	⬆ 5	⬆ 4			33.0		23.5	43.5
68	Esperanto	64945	⬇ 1	⬆ 1				25.9	3.7	70.3	0.1
69	Team_Italia	64427	⬆ 1	⬆ 5	⬆ 1		2.9	0.5	65.8	23.2	3.6	2.4
70	ParadoxZ Commando	63049	⬆ 1	⬆ 2	⬇ 1				71.5	28.5
71	Cap'n Entropy's Cavalcade of Wonderment	59923	⬇ 12	⬇ 3			69.4	8.2	18.8	3.6
72	Team Israel	56992	⬆ 1	⬇ 2			96.8		2.8	0.4
73	BitMEX Research	53468	⬇ 18	⬇ 8					94.1	5.9
74	Hungary	52997		⬆ 2					4.6	1.4	93.9
75	NUST	51265	⬆ 33	⬆ 32	⬆ 3	⬆ 2	58.1	39.4	1.6	0.8
76	EgyptianPolymaths	50896	⬇ 16	⬇ 1	⬇ 1	⬇ 1		84.8
77	AJ	50467	⬇ 8	⬇ 4	⬇ 1	⬇ 1			74.3	25.7
78	Brno University of Technology	46617	⬇ 2	⬇ 1	⬇ 1			3.5	76.1	20.4
79	ComputerraRU	45449	⬇ 4	⬇ 1			24.4		72.0	3.6
80	Team Belgium	37937	⬇ 2		⬆ 1		1.4	2.5	31.4	26.2	38.5
81	huskers-gimps	37666	⬆ 5	⬆ 2	⬆ 1				75.6	24.4
82	Turku	36285	⬆ 2	⬇ 1	⬆ 1				100.0
83	GIMPS.NEO	35902	⬇ 6	⬇ 4	⬇ 3				80.7	19.3
84	Team Viet Nam	35013	⬇ 4	⬇ 2			34.9		38.0	27.1
85	Debian	33368	⬇ 2	⬆ 1					98.2	1.8
86	Hermessz	33274	⬆ 2	⬆ 1	⬆ 1		64.5		35.5
87	Team H	33101	⬇ 2	⬇ 2	⬇ 1		13.5		85.9	0.5
88	HardOCP	31736	⬇ 7	⬇ 4					71.4	28.6
89	ᕙ(⇀‸↼‶)ᕗ	31555		⬇ 1			0.7		98.9	0.4
90	baraCUDA	29906	⬆ 132	⬇ 1					100.0
91	Aiblspitz	29880	⬆ 19	⬆ 5				88.2	2.6	9.1
92	The Fellowship of Infinity	28150	⬆ 2			⬆ 1			99.5	0.5
93	MurrayInfoSys	27497	⬆ 4	⬆ 1	⬆ 3	⬇ 1			66.9	33.1
94	Channel 4	27109	⬇ 1	⬇ 3	⬇ 1				82.4	17.6
95	Costa Rica	27096	⬆ 1	⬇ 2	⬇ 1				79.1	20.7
96	Small-Team-2000	27018	⬇ 6	⬇ 6	⬇ 1				2.9	97.1
97	socal_prime	24552	⬇ 6	⬇ 2					76.7	23.1	0.1
98	Georgia Tech	20319	⬆ 4	⬇ 1					100.0
99	LimePrime	19080	⬆ 1	⬆ 4				7.4	82.9	9.7
100	Team Retired	17747	⬇ 2	⬇ 1					30.9	11.9
101	A Single Engineer	17718	⬇ 2	⬇ 3					74.7	25.3
102	Com Systems (RU)	17650	⬆ 14	⬆ 2					70.9	29.1
103	GIMPS Romania	16577	⬆ 1	⬇ 2			77.6		19.3	3.1
104	PrimitiveRootsCircle	15770	⬇ 3	⬇ 4			15.4		50.2	31.3	3.1
105	SpartaAlumni	15533	⬇ 2	⬇ 3					75.9	24.1
106	TurkishMath	14500	⬆ 21	⬆ 2					94.6	5.4
107	RobotechResearch	13401	⬆ 15	⬆ 2	⬆ 1				47.7	52.2
108	Spain	12682	⬇ 3	⬇ 2	⬇ 1				68.0	32.0
109	moeses	12606	⬆ 4	⬆ 1					98.9	1.1
110	Quantus	12170	⬆ 5	⬆ 3			10.0		13.0	25.1		51.9
111	Ozzie Prime	11899	⬇ 4	⬆ 1					39.8	15.7		44.4
112	Portland State University	11098		⬆ 7				40.9	44.6	14.4
113	FREE ROBUX	10852	⬆ 6	⬆ 2					100.0
114	Royal Military College of Canada	10691	⬆ 6	⬆ 3	⬆ 2		89.7		7.9	2.4
115	Team Finland	10611	⬇ 4	⬆ 3	⬆ 2		1.5		96.0		2.5
116	Nerdfighters for Mersenne Primes	10546	⬇ 7	⬇ 5	⬇ 2				97.3	2.7
117	University of Waterloo	10503	⬆ 19	⬆ 3	⬆ 2				94.8	5.2
118	Team Slovenia	9940	⬇ 1	⬇ 2	⬇ 3				62.8	37.2
119	Syntony	9320	⬆ 7	⬆ 2	⬆ 2					100.0
120	MES-Team	9211	⬇ 28	⬇ 15	⬇ 2		68.0	7.7		24.3
121	Prime Rib	9057	⬆ 19	⬆ 13	⬆ 12	⬆ 10			97.4	2.6
122	LTT fans	9056	⬇ 40			⬇ 1	92.5				7.5
123	Shaffer's Studio	8770	⬆ 6	⬆ 2	⬇ 3	⬇ 1			89.2	10.7
124	math.auth.gr	8551	⬆ 10	⬆ 4		⬇ 1			100.0
125	JiBoTeam	8443	⬆ 3	⬇ 2	⬇ 2	⬇ 1				100.0
126	Pavlicin	8407	⬆ 96	⬆ 3	⬇ 1	⬇ 1	79.7	0.1	20.2
127	The_Dude_Abides	8323	⬆ 27	⬆ 22	⬆ 4	⬇ 1	0.9		30.0	52.7	1.2
128	SETI.Germany	8289	⬇ 22	⬇ 14	⬇ 1	⬇ 1		11.4		88.6
129	Server66	7983	⬆ 8	⬆ 4	⬇ 1	⬇ 1	100.0
130	Die Zeitfinder	7955	⬆ 1	⬇ 4	⬇ 1	⬇ 1			90.3	9.7
131	Mensa	7885	⬇ 10	⬇ 1	⬇ 5	⬇ 1			80.0	20.0
132	FreeBSD	7865	⬆ 6	⬇ 1					71.0	29.0
133	Granada	7355	⬇ 10	⬇ 9	⬇ 3		28.6		21.6	48.8
134	Abacus	7147	⬇ 2	⬆ 1	⬆ 1				98.8	1.2
135	Triangle	7139	⬇ 5	⬇ 3	⬇ 1				98.7	1.3
136	GIMPS.Taiwan	7047	⬇ 12	⬇ 9					81.2	18.1	0.1
137	Arpan Sen Labs	6686	⬆ 28	⬆ 4					55.4	44.6
138	FactorMania	6572	⬆ 7	⬇ 1				56.9			43.1
139	Team Christensen	6082	⬆ 4	⬆ 1	⬆ 2	⬆ 1				100.0
140	irowiki	6050	⬇ 1	⬇ 2	⬆ 2	⬆ 1				100.0
141	Team Norway	6049	⬇ 27	⬇ 5	⬇ 1	⬇ 2	74.4			8.4	16.8
142	Morocco	5693	⬆ 29	⬆ 2	⬆ 3	⬆ 3			57.5	42.5
143	Brasil	5626	⬇ 1	⬇ 4	⬇ 4	⬇ 1			70.1	29.8
144	México mágico	5568	⬆ 12	⬇ 2	⬇ 1	⬇ 1			85.3	14.6
145	Korea.Prime	5515	⬆ 16	⬆ 5	⬇ 1	⬇ 1			71.5	28.5
146	KnightLight	5012		⬇ 1						100.0
147	teamMALI	4955	⬆ 8	⬆ 7					79.6	20.4
148	nmbarek_team	4942	⬆ 1	⬇ 2					100.0
149	DePaul MAT 141	4934	⬆ 73	⬇ 2					99.6	0.4
150	Crunching@EVGA	4888		⬇ 2					99.7	0.3
151	YESHUA IS THE MESSIAH	4648	⬆ 27	⬆ 1					99.2	0.8
152	Hong Kong GIMP	4450	⬆ 1	⬇ 1					70.6	29.4
153	Noam Karni Team	3963	⬆ 5	⬆ 2					79.7	20.3
154	Phi Kappa Theta	3763	⬆ 6	⬆ 4					66.0	34.0
155	Elisabeth-von-Thadden-Schule	3557	⬇ 11	⬇ 12					65.1	34.8
156	Hyperion	3144	⬇ 23	⬇ 3						17.8
157	Politeknik Banting, Selangor	3101	⬇ 32	⬆ 2			65.4		25.5	9.1
158	Olympic College	3075	⬇ 1	⬇ 2						100.0
159	GIMPS.Hong Kong	2626	⬆ 3	⬆ 2			2.1		61.4	36.4
160	Pi Rho	2499	⬆ 6	⬆ 4					67.1	32.9
161	GIMPSMalaysia	2394	⬆ 7	⬆ 4					66.8	33.2
162	zeit	2322	⬇ 3				11.8			88.2
163	CZAsTc	2288	⬆ 22	⬆ 4					99.5	0.4
164	Team Austria	2199	⬇ 69	⬆ 5			12.8	9.5	77.7
165	GIMPS_KS	2199	⬆ 5	⬆ 5					36.5	62.0	1.4
166	Kabylie	2148	⬇ 3	⬆ 2			14.9	2.0	36.1	46.9
167	The Prime Pioneers	1919	⬆ 7	⬆ 5	⬆ 1			100.0
168	VRS_SE	1852	⬆ 1	⬆ 3	⬆ 2				85.1	14.9
169	Furry Primes	1813	⬇ 18	⬇ 6	⬇ 2		71.7			28.3
170	San Francisco	1586	⬆ 11	⬆ 4	⬆ 1				100.0
171	hreid	1575	⬆ 11	⬆ 4	⬆ 1				100.0
172	cr_colorado	1549	⬆ 11	⬆ 4	⬆ 1					100.0
173	Obsidian	1542	⬆ 3	⬆ 4	⬆ 1					100.0
174	3DCenter.org	1194	⬇ 7	⬆ 5	⬆ 2						100.0
175	The Planetary Society	1124	⬆ 47	⬆ 45	⬆ 2				75.8	24.2
176	Amserver	1066	⬆ 46	⬆ 4	⬆ 2		100.0
177	Join Us 😈	1060	⬆ 20	⬆ 4	⬆ 2		66.8			33.2
178	youngfun429	1037	⬇ 31	⬆ 4	⬆ 2				75.3	24.7
179	TunisianTeam	1031	⬆ 7	⬆ 4	⬆ 2				75.0	25.0
180	I Love Canadian Natural Resources	1018	⬇ 7	⬇ 2	⬇ 5					100.0
181	Therian Primes	1007	⬆ 6	⬆ 3	⬆ 1			14.6		52.4	33.0
182	Team Bulgaria	905	⬆ 32	⬆ 35	⬆ 1				95.0		5.0
183	Czech National Team	903	⬆ 6	⬆ 2	⬆ 1		4.1		91.8	0.8	2.0
184	RafaÅ‚ HacuÅ›	860	⬆ 38	⬆ 3	⬆ 1				100.0
185	AWC	801	⬆ 6	⬆ 3	⬆ 1				100.0
186	GIMPS Asturias	794	⬆ 6	⬆ 5	⬆ 1				99.6	0.4
187	Weatopians	793	⬆ 6	⬆ 5	⬆ 1				99.7	0.3
188	TimE4This	626	⬆ 2	⬇ 2	⬆ 1					100.0
189	SGDynamo Dresden	564	⬆ 9	⬆ 4	⬆ 1		100.0
190	PARG team	563	⬆ 29	⬆ 4	⬆ 1					96.2	3.8
191	PrimeObsession	539	⬆ 8	⬆ 4	⬆ 1					100.0
192	GIMPS.Romania	422	⬆ 30	⬆ 5	⬆ 1				100.0
193	Yurunago	276	⬆ 10	⬆ 6	⬆ 2					100.0
194	LIKN	276	⬆ 28	⬆ 26	⬆ 20					100.0
195	Vegan	275	⬆ 9	⬆ 5	⬆ 1					100.0
196	SETI.USA	275	⬆ 26	⬆ 24	⬆ 18	⬆ 18				100.0
197	His Dark Materials	267	⬇ 9	⬆ 1	⬇ 3	⬇ 1					99.9
198	Byberg Nordic Prime	265	⬆ 7	⬆ 3	⬇ 1	⬇ 1				100.0
199	FDY	265	⬆ 23	⬆ 3	⬇ 1	⬇ 1				100.0
200	Subprime Searches	256	⬇ 21	⬆ 3	⬇ 1	⬇ 1				100.0
201	GIMPS Hams	253	⬆ 7	⬆ 3	⬇ 1	⬇ 1		100.0
202	WSU Cougars	247	⬇ 30	⬆ 3	⬇ 1	⬇ 1				100.0
203	miiro	240	⬆ 10	⬆ 5	⬇ 1	⬇ 1	100.0
204	Zorin OS Crew	230	⬇ 20	⬆ 5	⬇ 1	⬇ 1				100.0
205	DividerHunt	221	⬆ 4	⬆ 5		⬇ 1	100.0
206	GIMPS_IOM	215	⬇ 29	⬇ 10	⬇ 2	⬇ 1	100.0
207	Manri Costa Rica	213	⬆ 3	⬆ 5	⬇ 1	⬇ 1				100.0
208	/r/counting	184	⬆ 4	⬆ 5	⬇ 1	⬇ 1
209	Team Dominik Radler	183	⬇ 7	⬇ 3	⬇ 1	⬇ 1	100.0
210	GIMPS.Peace	122	⬆ 5	⬆ 4	⬇ 1	⬇ 1	44.7	55.3
211	sannerud.com	108	⬆ 6	⬆ 5	⬇ 1	⬇ 1	43.1				19.4	37.5
212	alan145	59	⬇ 12	⬇ 1	⬇ 1	⬇ 1	100.0
213	PROMYS	23	⬆ 5	⬆ 5	⬇ 1	⬇ 1					100.0
214	yfinder	1	⬆ 7	⬆ 5	⬇ 1	⬇ 1				100.0