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 2026-05-22 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	Slovakia	703025331	⬆ 1	⬆ 1	⬆ 1	⬆ 1	0.1	98.9	0.1		0.9
2	GIMPS.Russia	697595555	⬇ 1	⬇ 1	⬇ 1	⬇ 1	0.2		0.1		99.7
3	POLAND	131660771					0.8	96.3	0.4	0.1	2.4
4	Ars Technica Team Prime Rib	127859681	⬆ 2	⬆ 2				99.1		0.8
5	PrimeNet	122300048	⬇ 1				0.2	98.1	0.7	1.0
6	-Too many Ones-	59344505	⬇ 1	⬇ 2			0.1	74.6			25.3
7	GIMPSChina	21616480	⬆ 1	⬆ 1			65.7	21.1	4.2	0.5	8.3
8	szerverem.hu	14993741	⬆ 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	13603092	⬆ 1		⬆ 1			0.8	36.1	1.6	61.4
11	UCM-curtisc	11757720	⬆ 1	⬆ 1	⬆ 2	⬆ 1			99.3	0.7
12	Team-Deutschland	11553538	⬆ 1	⬇ 1		⬇ 1	2.7	51.9	0.7	0.1	44.4
13	More Power!!!	10826705	⬇ 3	⬆ 1	⬆ 1		17.1	70.4	2.6	2.0	7.9
14	TeamUK	7147784		⬆ 1	⬆ 1		49.0	2.9	18.9	1.5	27.7	0.1
15	Porta Kruse	6396507	⬆ 1	⬆ 1	⬆ 1		2.0	0.5			91.2	6.1
16	GPU to 72	4712411	⬆ 1	⬆ 1	⬆ 1		51.1	27.7	0.5	4.0	16.5
17	Numberphile	3917841	⬆ 2	⬆ 1	⬆ 1		15.9	33.1	16.1	4.5	30.1
18	UW Eau Claire	3002066	⬆ 10	⬆ 3	⬆ 1		89.2		7.9	2.9
19	unRAID	2984215	⬇ 12	⬇ 12	⬇ 11			96.5	3.2	0.2	0.1
20	tsc	2792864		⬇ 1			70.3	3.8	1.1	0.4	24.4
21	Argentina	2359305	⬆ 207	⬆ 8			92.9		7.1
22	UKRAINE	2289905	⬇ 1		⬆ 1		16.4	9.0	61.3	13.2
23	SpongeBob SquarePants	2097331	⬇ 5	⬇ 3	⬇ 1			30.4	58.5	11.1
24	Wikipedia	1977643	⬇ 1	⬇ 1			58.7	33.6	4.6	2.1	0.8
25	Swedes Of Primes	1245003	⬇ 1	⬆ 2	⬆ 2		0.5	79.8	16.8	2.9
26	GIMPS.Occitania	1204732	⬆ 1	⬆ 2	⬆ 2			4.4				95.6
27	GIMPS.Korea	1099491	⬆ 5	⬆ 3	⬆ 2	⬆ 1	88.9	4.9	4.3	0.9	0.8
28	Dutch Power Cows	1090696	⬇ 6	⬇ 4	⬇ 3	⬇ 1	42.8	17.1	2.0	2.4	35.8
29	MBAi.Cloud	834917	⬆ 2	⬆ 2	⬆ 1				99.9	0.1
30	MATHSareREAL	578886		⬆ 2	⬆ 1		96.2		2.5	1.3
31	citizenscience.ru	518349	⬆ 4	⬆ 2	⬆ 1		88.2	3.2	4.6	0.8	3.0	0.3
32	Buhr	475036	⬆ 4	⬆ 3	⬆ 1		54.7	4.4	17.6	5.5	17.8
33	GIMPS.Japan	444902	⬇ 7	⬇ 7	⬇ 7		21.0		27.8	7.9	43.2
34	Rechenkraft.net	405750	⬇ 1	⬆ 2	⬆ 1		1.4	54.7	6.1	5.7	32.1
35	MOXA	389659	⬇ 6	⬇ 1	⬇ 1		99.0		0.8	0.2
36	Terry Kim Team	384799	⬇ 2	⬆ 1			96.0		3.0	0.7
37	Colorado School of Mines	325471	⬆ 13	⬆ 2			92.7		6.0	1.3
38	S485122	305608	⬇ 1					95.0		5.0
39	Smoke-it	265516	⬇ 1	⬆ 1			90.5	7.1	1.8
40	404 - "Primes not Found"	263551	⬆ 7	⬆ 3			82.2		17.6	0.2
41	nranks	238502	⬇ 1	⬆ 5			31.4	0.5	3.0	0.4	64.7
42	GIMPS.USA	235725	⬇ 17	⬇ 17	⬆ 1		59.8	3.5	26.5	7.7	2.0
43	YahsTeam	232402	⬇ 4	⬇ 2	⬇ 1		87.7		10.2	2.1
44	NerdyGirls	201049	⬇ 2	⬆ 1	⬆ 1			42.2	7.3	50.5
45	GIMPS Team Philippines	200679	⬇ 4	⬇ 1	⬇ 1		58.4		7.8	1.7	28.6
46	Canada	182147	⬇ 3	⬆ 1				2.3	69.3	28.4
47	NanJing Tech	181270	⬆ 51	⬆ 4	⬆ 2		28.6		67.5	3.9
48	Team Tartan	179496	⬇ 3		⬇ 1				76.9	23.1
49	OverclockerAustralia	152444			⬆ 1		57.6		19.9	19.0
50	randomteam	134309	⬇ 6	⬇ 8	⬇ 2						100.0
51	GIMPS.NZ	132334	⬆ 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	120430	⬆ 5	⬆ 3			9.3	66.6	4.7	7.8	11.5
55	SASAKI	104602	⬇ 2	⬆ 1			100.0
56	GIMPS China	103076	⬇ 10	⬇ 1			90.1		5.0		4.6
57	IOTA	99815	⬆ 33	⬆ 7	⬆ 1	⬆ 1	95.0		3.4	1.7
58	GIMPS.Portugal	99542	⬆ 51	⬆ 22	⬆ 2	⬇ 1	42.9	52.2		4.9
59	BitMEX Research	95129	⬇ 11	⬇ 5	⬇ 2				95.0	5.0
60	Wisconsin	91704	⬇ 3	⬇ 2	⬇ 1		41.9		31.6	26.5
61	AMD Users	91022	⬆ 5				51.2	0.7	10.5	37.2	0.4
62	UIUC	86170	⬆ 1						69.0	31.0
63	Cap'n Entropy's Cavalcade of Wonderment	81878	⬇ 7	⬇ 4			72.5	6.6	18.6	2.3
64	Net-Work	77282	⬇ 2	⬆ 1			4.8	1.9			86.3
65	Eratosthenes Sieve	74515	⬇ 1	⬆ 1	⬆ 2	⬆ 1	0.7		95.4	3.8
66	SHADO	74405	⬇ 6	⬇ 3		⬇ 1			60.0	19.7	12.2	1.8
67	Wile E. Coyote	73255	⬆ 10	⬆ 1	⬆ 1	⬆ 1			75.8	0.4	23.7
68	EgyptianPolymaths	73073	⬇ 14	⬇ 8	⬇ 3	⬇ 1		59.1			29.1
69	Esperanto	66757	⬇ 4	⬇ 2				26.4	4.8	68.7	0.2
70	AJ	65291	⬇ 1	⬇ 1					75.2	24.8
71	S147127	62844	⬆ 5	⬆ 1			29.7		18.0	52.3
72	Team Israel	60490	⬇ 5	⬆ 1			96.9		2.6	0.4
73	ParadoxZ Commando	59824	⬇ 3	⬇ 2					73.8	26.2
74	Team_Italia	53505	⬇ 1	⬇ 4			3.3		65.4	24.8	2.4	3.4
75	Hungary	52583	⬇ 17	⬇ 1					3.1	1.9	94.7
76	Brno University of Technology	48864	⬇ 4		⬆ 1			9.2	72.4	18.4
77	ComputerraRU	47886	⬆ 1		⬇ 1		21.5		68.6	9.8
78	GIMPS.NEO	47770	⬇ 10	⬇ 3					78.2	21.8
79	Team Belgium	43056	⬇ 4	⬇ 1			1.2	6.1	29.5	19.9	43.2
80	Team Viet Nam	41552	⬇ 1	⬇ 1			29.4		32.0	27.4	11.2
81	VIPR	39804	⬆ 23	⬆ 7	⬆ 1		81.2		11.9	6.7
82	Turku	36285	⬆ 10	⬆ 2	⬆ 1	⬆ 1			100.0
83	huskers-gimps	35914	⬆ 4	⬆ 2	⬆ 1	⬆ 1			74.5	25.5
84	Team H	35330	⬇ 3	⬆ 2	⬆ 1	⬆ 1	12.8		86.7	0.5
85	HardOCP	35124		⬇ 4	⬇ 4	⬇ 3			73.3	26.7
86	Debian	33893	⬆ 2	⬇ 4					99.0	1.0
87	ᕙ(⇀‸↼‶)ᕗ	32333	⬆ 6	⬆ 2	⬆ 2		0.7		99.0	0.4
88	Hermessz	31076	⬇ 6	⬇ 1	⬇ 1		64.7		35.3
89	baraCUDA	29906	⬆ 139	⬆ 133	⬆ 8				100.0
90	Small-Team-2000	29675	⬇ 1		⬇ 2				10.6	89.4
91	socal_prime	26131	⬇ 5						71.7	28.1	0.1
92	Channel 4	25750	⬆ 2	⬆ 1					80.5	19.5
93	The Fellowship of Infinity	24987	⬆ 2	⬆ 2					99.5	0.5
94	Costa Rica	23837	⬇ 3	⬆ 2	⬆ 1				75.2	24.4
95	MurrayInfoSys	23776	⬆ 6	⬆ 2	⬆ 1				68.5	31.5
96	MES-Team	23657	⬇ 13	⬇ 4	⬇ 2		74.2	6.4		19.4
97	LTT fans	22365	⬇ 26	⬇ 14	⬇ 7		37.5				62.5
98	Georgia Tech	20319	⬇ 37	⬆ 5					100.0
99	A Single Engineer	19256		⬆ 2	⬆ 1	⬆ 1			76.7	23.3
100	Team Retired	18978	⬇ 4	⬇ 1	⬇ 1	⬇ 1			28.9	11.2
101	SpartaAlumni	18233	⬇ 1	⬆ 1					68.6	31.4
102	GIMPS Romania	18140	⬆ 44	⬆ 2			70.9		26.2	2.9
103	Aiblspitz	17523	⬆ 29	⬆ 8	⬆ 1		0.2	78.4	9.0	12.2	0.2
104	PrimitiveRootsCircle	17033	⬇ 7	⬇ 4	⬇ 1		18.9		51.1	27.2	2.8
105	LimePrime	15012	⬇ 21	⬇ 7				9.4	78.4	12.2
106	Spain	14757	⬆ 5	⬇ 1	⬆ 4	⬆ 4			69.2	30.8
107	Portland State University	14476	⬇ 4	⬆ 2		⬇ 1		31.5	55.5	13.0
108	NUST	14223	⬆ 8			⬇ 1	16.4	74.6	5.9	3.0
109	Com Systems (RU)	14208	⬆ 24	⬆ 7	⬆ 3	⬇ 1			65.9	34.1
110	Ozzie Prime	14002	⬇ 2	⬇ 3	⬇ 1	⬇ 1		3.0	39.4	17.2		40.3
111	moeses	13367	⬆ 2	⬆ 4					99.1	0.8
112	Nerdfighters for Mersenne Primes	13188	⬇ 5		⬆ 2				89.5	10.5
113	Team Slovenia	12416	⬇ 1	⬆ 4	⬆ 3				69.0	31.0
114	Quantus	12170	⬇ 8		⬆ 1		10.0		13.0	25.1		51.9
115	Team Finland	12069	⬇ 41	⬇ 5	⬇ 2		1.0		96.8		2.2
116	TurkishMath	11994	⬆ 19	⬆ 10	⬆ 3				87.1	12.9
117	RobotechResearch	11805	⬆ 22	⬆ 10					47.5	52.4
118	SETI.Germany	11194	⬇ 8	⬇ 12				8.5	14.2	77.4
119	FREE ROBUX	10852	⬆ 2		⬆ 1				100.0
120	Royal Military College of Canada	10691	⬆ 2		⬆ 2		89.7		7.9	2.4
121	Granada	10388	⬇ 3	⬆ 2			27.4		22.8	49.1
122	GIMPS.Taiwan	10152	⬇ 8	⬆ 2	⬆ 2	⬆ 1			86.9	12.6	0.1
123	Team Austria	9889	⬇ 43	⬇ 29	⬇ 17	⬇ 1	80.6	2.1	17.3
124	Syntony	9602	⬆ 1	⬆ 1	⬆ 1					100.0
125	Team Norway	9408	⬇ 20	⬇ 12	⬇ 2		78.2			5.4	16.2
126	Mensa	8910	⬇ 7	⬇ 5	⬆ 1				88.2	11.8
127	Shaffer's Studio	8826	⬆ 2	⬆ 3	⬆ 1				88.2	11.7
128	JiBoTeam	8715	⬇ 1	⬆ 1	⬇ 2					100.0
129	Die Zeitfinder	8635	⬇ 1	⬇ 1		⬆ 2			91.0	9.0
130	University of Waterloo	8354	⬆ 10	⬆ 7		⬇ 1			100.0
131	Triangle	7873	⬇ 1	⬆ 3	⬆ 2	⬇ 1			98.9	1.0
132	math.auth.gr	7704	⬆ 54	⬆ 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	6945	⬇ 20	⬇ 4	⬇ 1					19.5
138	Prime Rib	6563	⬇ 1		⬆ 1				96.4	3.6
139	irowiki	6496	⬇ 3	⬆ 2	⬆ 1					100.0
140	FactorMania	6364	⬆ 17	⬆ 11	⬆ 3			58.7			41.3
141	Team Christensen	5881	⬆ 4	⬆ 2	⬆ 1	⬆ 1				100.0
142	México mágico	5795	⬆ 19	⬆ 14	⬆ 12	⬆ 1			82.0	18.0
143	Elisabeth-von-Thadden-Schule	5505	⬆ 1	⬆ 1	⬆ 1	⬆ 1			42.1	57.9
144	Politeknik Banting, Selangor	5263	⬇ 29	⬇ 22	⬇ 12	⬆ 1	79.6		15.0	5.4
145	KnightLight	5257	⬆ 64	⬆ 1		⬆ 1				100.0
146	nmbarek_team	4951	⬆ 2	⬆ 2		⬆ 1			99.8	0.2
147	teamMALI	4927	⬆ 4	⬆ 8	⬆ 1	⬆ 1			79.5	20.5
148	Crunching@EVGA	4888	⬆ 10	⬆ 1	⬆ 1	⬆ 1			99.7	0.3
149	Arpan Sen Labs	4825	⬆ 79	⬆ 16	⬆ 8	⬆ 1			60.4	39.6
150	Pavlicin	4809	⬆ 78	⬆ 72	⬆ 27	⬆ 1	99.8	0.2
151	Danpi for GIMPS	4710	⬆ 1	⬆ 2	⬇ 1	⬆ 1	100.0
152	Korea.Prime	4699	⬆ 18	⬆ 9		⬆ 1			66.9	33.1
153	Hong Kong GIMP	4694	⬇ 3	⬆ 1	⬇ 2	⬆ 1			66.7	33.3
154	SU Prime Pirates	4435	⬇ 12	⬇ 12	⬇ 7	⬆ 1			89.3	10.7
155	The_Dude_Abides	4375	⬇ 8	⬇ 3	⬇ 2	⬆ 1	12.3			73.2
156	Noam Karni Team	3962	⬆ 4	⬆ 3		⬆ 2			79.7	20.3
157	Phi Kappa Theta	3918	⬆ 6	⬆ 3	⬆ 2	⬆ 3			61.7	38.3
158	Olympic College	3828	⬇ 5	⬇ 1	⬇ 3	⬇ 1				100.0
159	Server66	3762	⬇ 28	⬇ 20	⬇ 1		100.0
160	GIMPS.Hong Kong	3618	⬇ 1	⬆ 2	⬆ 1	⬆ 1	1.6		65.8	32.6
161	Furry Primes	3457	⬇ 27	⬇ 11	⬇ 1	⬆ 2	85.1			14.9
162	YESHUA IS THE MESSIAH	3366	⬆ 66	⬆ 16	⬆ 1	⬆ 2			99.3	0.7
163	zeit	3324	⬇ 14	⬇ 5	⬇ 1	⬇ 1	7.8			92.2
164	MES22-Team	3277	⬇ 41	⬇ 17		⬆ 1	100.0
165	Morocco	3242	⬆ 24	⬆ 8	⬆ 4	⬆ 1			50.5	49.5
166	Kabylie	3113	⬇ 12	⬇ 3	⬇ 1	⬆ 1	15.2	2.4	50.0	32.4
167	Team_Brazil	2999	⬇ 5	⬇ 3	⬇ 1	⬆ 1	83.1	0.2		16.7
168	MadPoo	2620	⬇ 66	⬇ 50	⬇ 27	⬇ 27		52.2		47.8
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		⬇ 1					36.5	62.0	1.4
173	youngfun429	2154	⬇ 47	⬇ 28	⬇ 6				36.3	63.7
174	The Prime Pioneers	1919	⬇ 7		⬆ 1			100.0
175	The Pensis	1869			⬆ 1					100.0
176	3DCenter.org	1832	⬇ 21	⬇ 10	⬇ 2						100.0
177	DePaul MAT 141	1692	⬆ 51	⬆ 45	⬆ 15				99.8	0.2
178	San Francisco	1586	⬆ 4	⬆ 3	⬆ 1				100.0
179	hreid	1575	⬆ 16	⬆ 3	⬆ 1				100.0
180	cr_colorado	1549	⬆ 3	⬆ 3	⬆ 1					100.0
181	Obsidian	1542	⬇ 4	⬇ 4	⬆ 1					100.0
182	I Love Canadian Natural Resources	1514	⬇ 17	⬇ 15	⬇ 9					100.0
183	CZAsTc	1448	⬆ 2	⬆ 2					99.5	0.4
184	WSU Cougars	1390	⬇ 41	⬇ 12					55.3	44.6
185	GIMPS_IOM	1245	⬇ 6	⬇ 9			100.0
186	Subprime Searches	1226	⬇ 12	⬇ 7			79.1			20.9
187	Join Us 😈	1060	⬆ 13	⬆ 10			66.8			33.2
188	TunisianTeam	1031	⬇ 24	⬇ 2					75.0	25.0
189	Therian Primes	1007	⬆ 12	⬇ 2				14.6		52.4	33.0
190	Czech National Team	903	⬆ 16	⬇ 1			4.1		91.8	0.8	2.0
191	TimE4This	876	⬇ 7	⬇ 1						100.0
192	AWC	801	⬇ 1	⬇ 1	⬆ 1				100.0
193	F=dp/dt	800	⬇ 17	⬇ 13	⬇ 15				99.3	0.7
194	GIMPS Asturias	794	⬇ 2	⬇ 2					99.6	0.4
195	Weatopians	793	⬇ 2	⬇ 2					99.7	0.3
196	Zorin OS Crew	686	⬇ 18	⬇ 12	⬆ 1					100.0
197	His Dark Materials	683	⬇ 17	⬇ 9	⬇ 1					31.9	68.0
198	SGDynamo Dresden	580	⬆ 4	⬆ 1			100.0
199	PrimeObsession	539	⬆ 4	⬆ 1						100.0
200	GIMPS.Romania	422	⬆ 28	⬆ 22	⬆ 24				100.0
201	alan145	390	⬇ 13	⬇ 3			100.0
202	Optimists Prime	365	⬇ 29	⬇ 6	⬇ 2			100.0
203	PARG team	298	⬆ 25	⬆ 16	⬆ 17					92.8	7.2
204	Team Dominik Radler	290	⬆ 3	⬇ 2	⬇ 2		100.0
205	Yurunago	276	⬆ 5	⬇ 2	⬇ 2					100.0
206	Vegan	275	⬆ 22	⬇ 2	⬇ 2					100.0
207	Byberg Nordic Prime	265	⬇ 13	⬇ 2	⬇ 2					100.0
208	FDY	265	⬆ 20	⬆ 14	⬇ 2					100.0
209	www.Adamek.biz	265	⬆ 4	⬇ 3	⬇ 2					100.0
210	Math Teachers of the World	259	⬆ 4	⬇ 3	⬇ 2				100.0
211	GIMPS Hams	253	⬆ 4	⬇ 3	⬇ 2			100.0
212	DividerHunt	221	⬆ 5	⬇ 3	⬇ 2		100.0
213	Manri Costa Rica	213	⬆ 5	⬇ 2	⬇ 2					100.0
214	30thousandwon	193	⬆ 6	⬇ 2	⬇ 2					100.0
215	/r/counting	184	⬇ 7	⬇ 5	⬇ 2
216	miiro	150	⬆ 5	⬇ 2	⬇ 2		100.0
217	GIMPS.Peace	122	⬆ 5	⬇ 2	⬇ 2		44.7	55.3
218	TeamUbuntu	121	⬆ 5	⬇ 2	⬇ 2					100.0
219	sannerud.com	108	⬆ 8	⬇ 2	⬇ 1		43.1				19.4	37.5
220	Team Bulgaria	103	⬇ 9	⬇ 7	⬇ 3						100.0
221	PROMYS	23	⬆ 5	⬇ 3	⬇ 2						100.0
222	yfinder	1	⬇ 3	⬇ 1	⬆ 1					100.0
223	ANDY	0	⬇ 42	⬇ 3	⬇ 2