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 2025-12-26 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	997214112	⬆ 1				0.4		0.1		99.5
2	PrimeNet	804172172	⬇ 1					98.9	0.1	0.2	0.8
3	Slovakia	690491276					0.2	97.6			2.2
4	POLAND	456240995					0.3	99.1	0.1		0.5
5	-Too many Ones-	254218221					0.4	87.5			12.1
6	Ars Technica Team Prime Rib	34587702	⬆ 1				0.3	94.1	0.1	2.1	3.3
7	unRAID	34214118	⬇ 1					99.5	0.4		0.1
8	GIMPSChina	21832830					83.2	10.1	4.1	0.9	1.6
9	One Man Team	18151493						99.5	0.5
10	More Power!!!	14231232					13.9	55.6	1.7	0.7	28.1
11	GW's legions	12696263					0.1	0.8	28.6	0.5	70.0
12	Team-Deutschland	12433776					4.1	4.7	0.6	0.2	90.3
13	UCM-curtisc	11898348							99.4	0.6
14	TeamUK	7351579	⬆ 2				36.6	7.3	19.5	1.2	35.2	0.2
15	GPU to 72	5308832					65.2	21.6	0.9	3.2	9.1
16	SpongeBob SquarePants	4822726	⬇ 2				7.1	30.0	49.0	12.2	1.7
17	Numberphile	3020087	⬆ 2	⬆ 1	⬆ 1		34.0	39.2	18.3	6.6	1.6
18	Dutch Power Cows	2975525	⬇ 1	⬇ 1	⬇ 1		28.2	35.7	1.0	0.5	34.6
19	tsc	2482081	⬇ 1				91.4	6.6	1.5	0.2	0.4
20	Porta Kruse	2455009	⬆ 17	⬆ 15	⬆ 4	⬆ 1				0.1	91.5	8.0
21	UKRAINE	2259016	⬇ 1	⬇ 1	⬇ 1	⬇ 1	38.7	16.2	30.7	14.2
22	Wikipedia	1694350	⬆ 2	⬆ 2	⬇ 1		66.4	26.3	4.3	2.7	0.1
23	Swedes Of Primes	1549042	⬇ 1	⬇ 1	⬇ 1			84.0	13.6	2.4
24	GIMPS.USA	1430149	⬇ 1	⬇ 1	⬇ 1		6.1	0.2	3.4	2.3	87.9
25	GIMPS.Japan	1335863	⬇ 4	⬇ 4			4.4	0.1	7.8	1.6	86.0
26	GIMPS.Occitania	1276739	⬆ 17	⬇ 1								100.0
27	MATHSareREAL	712877	⬆ 1	⬇ 1			96.5		2.5	0.9
28	MOXA	703856	⬇ 3	⬇ 1			98.6		1.0	0.4
29	Rechenkraft.net	554044	⬇ 2	⬇ 1			9.6	59.7	2.8	5.4	21.8	0.7
30	MBAi.Cloud	480276	⬇ 1	⬇ 1					100.0
31	citizenscience.ru	433689	⬆ 2	⬇ 1			82.4	7.3	3.6	1.2	2.9	2.6
32	Terry Kim Team	413831	⬆ 2	⬇ 1			97.9		1.1	0.4
33	Buhr	366160	⬆ 6	⬆ 1			66.9	0.5	23.2	7.0	2.5
34	Smoke-it	341063	⬇ 3	⬇ 2			92.0	5.5	1.7	0.1
35	S485122	315604		⬇ 2				95.0		5.0
36	GIMPS.Korea	276886	⬆ 50	⬆ 18			80.1	6.7	11.6	1.3	0.3
37	GIMPS China	220865	⬇ 7	⬇ 1			96.4		1.1	0.3	2.1
38	YahsTeam	207726	⬆ 4	⬆ 3			89.5		9.1	1.5
39	Canada	205418	⬇ 7	⬆ 1				5.5	60.9	32.5
40	Team Tartan	200701	⬆ 4	⬇ 1					77.1	22.8
41	BitMEX Research	190883		⬇ 3					95.3	4.7
42	NerdyGirls	189000	⬆ 5	⬆ 4	⬆ 1	⬆ 1	9.1	26.0	11.4	53.5
43	randomteam	188950	⬆ 3		⬇ 1	⬇ 1					100.0
44	nranks	171252	⬆ 4	⬆ 1			44.3	0.8	3.8	0.8	50.3
45	GIMPS Team Philippines	166824		⬇ 3	⬆ 1		92.0		2.9	2.2	2.8
46	Georgia Tech	151959	⬇ 10	⬇ 9	⬇ 1		94.9	3.5	1.5
47	OverclockerAustralia	147200	⬆ 5	⬆ 1			59.7		21.2	15.6
48	Team Finland	133234	⬇ 10	⬇ 1			89.8	0.3	10.0
49	Cap'n Entropy's Cavalcade of Wonderment	130190	⬆ 1				78.2	4.4	15.4	2.0
50	GIMPS.NZ	128080	⬇ 1				78.6		11.2	10.1
51	Wisconsin	118700	⬆ 2		⬆ 1		56.2		26.1	17.7
52	Team China	118038	⬆ 5	⬆ 1	⬇ 1	⬆ 1			99.7	0.3
53	SASAKI	117247	⬆ 1	⬇ 1		⬇ 1	100.0
54	EgyptianPolymaths	109238	⬆ 5	⬆ 2			3.6	23.4		0.9	67.1
55	Unicamp	96505	⬆ 33	⬆ 4	⬆ 1		75.0	0.3	18.8	5.8
56	Hungary	95217	⬆ 13	⬆ 2	⬇ 1		0.7	0.1	1.9	2.9	94.1
57	SHADO	89680	⬆ 5	⬆ 3	⬆ 1				66.5	16.2	9.9	2.2
58	Brno University of Technology	85691	⬆ 5	⬇ 1	⬇ 1			44.4	46.5	9.1
59	LTT fans	82778	⬆ 2	⬆ 2	⬆ 1		54.9		9.3	3.4	32.4
60	Net-Work	80295		⬆ 2	⬆ 1			2.9			89.4
61	Esperanto	75619	⬇ 5	⬆ 2	⬆ 1			23.4	25.3	51.2	0.2
62	Eratosthenes Sieve	75505	⬆ 3	⬆ 3	⬆ 1		0.7		99.3
63	UIUC	73367	⬆ 3	⬆ 5	⬆ 1				68.3	31.7
64	GIMPS.France	68435	⬇ 13	⬆ 5	⬆ 3		16.3	23.6	6.9	32.6	20.2
65	GIMPS.NEO	68099	⬆ 2	⬆ 2					75.3	24.6
66	Team Israel	63113	⬆ 5				96.6		1.3	2.2
67	UW Eau Claire	62689	⬆ 174	⬆ 51	⬆ 7				71.4	28.6
68	404 - "Primes not Found"	57424	⬆ 4	⬆ 4	⬆ 1		42.1		57.9
69	ParadoxZ Commando	56191	⬆ 4	⬆ 4	⬆ 2				75.5	24.5
70	Team_Italia	55259	⬆ 4	⬆ 6			2.3		73.2	17.4	1.8	4.6
71	AMD Users	52902	⬇ 13		⬆ 1		75.8		16.9	7.3
72	ComputerraRU	52008	⬇ 17	⬇ 8	⬇ 4		17.4		70.6	12.0
73	MadPoo	49956	⬇ 33	⬇ 29	⬇ 14			9.4	9.4	81.2
74	Team Belgium	48857	⬇ 10	⬇ 4	⬇ 1		1.2	6.5	51.3	14.8	26.1
75	MES-Team	47887	⬇ 5	⬇ 1			72.6	7.2		20.2
76	AJ	47648	⬇ 1	⬆ 1	⬆ 1				75.2	24.8
77	S147127	46141	⬇ 1	⬆ 1	⬇ 1		18.5		8.3	73.2
78	Team Austria	43819	⬇ 10	⬇ 3	⬆ 1		97.1			2.9
79	Team Viet Nam	43551	⬇ 53	⬇ 24	⬇ 1		28.0		30.6	30.7	10.7
80	Wile E. Coyote	41296	⬆ 3						81.6	7.0	11.4
81	LimePrime	38630	⬇ 2	⬇ 2				6.7	88.4	4.7	0.1
82	Team H	37017	⬇ 4				7.8	2.0	89.7	0.5
83	socal_prime	35520	⬇ 6	⬇ 2				1.1	69.0	29.7	0.1
84	Hermessz	33956	⬇ 3	⬇ 1			55.5		43.2	1.3
85	Colorado School of Mines	29832	⬆ 51	⬆ 30	⬆ 17		50.4		38.0	11.6
86	HardOCP	27607	⬆ 7		⬇ 1				80.9	19.0
87	Debian	26917	⬆ 14	⬆ 2	⬆ 1				98.0	2.0
88	Small-Team-2000	26591	⬆ 2	⬇ 3	⬇ 2				11.8	88.2
89	huskers-gimps	25514	⬆ 20	⬆ 8	⬇ 2				72.6	27.4
90	Costa Rica	23237	⬆ 2	⬆ 1					69.9	29.7
91	Portland State University	22909	⬇ 7	⬇ 1	⬆ 1		17.7	20.5	51.2	10.6
92	Spain	22109	⬇ 7	⬇ 8	⬇ 3		47.7		31.8	20.5
93	Team Retired	20955	⬆ 5	⬆ 1	⬆ 2				26.5	10.0
94	Team Norway	20714	⬆ 6	⬆ 2	⬆ 2		84.2			2.4	12.2	1.2
95	SpartaAlumni	20567	⬇ 4		⬇ 2	⬆ 1			70.4	29.6
96	Quantus	20553	⬇ 2	⬇ 9	⬇ 5	⬇ 1	13.2		30.1	25.9		30.7
97	Team Slovenia	19397	⬇ 10	⬇ 9	⬇ 3				71.7	28.2
98	Ozzie Prime	18908	⬇ 9	⬇ 5				4.5	69.7	11.6		14.2
99	A Single Engineer	18545		⬇ 1	⬆ 1				78.8	21.2
100	Politeknik Banting, Selangor	18470	⬇ 20	⬇ 8	⬇ 3		82.5		4.3	13.2
101	PrimitiveRootsCircle	17987	⬆ 10				35.4		39.2	22.7	2.6
102	GIMPS.Taiwan	17784	⬇ 6	⬇ 2	⬇ 3				91.4	8.5
103	Channel 4	16584	⬇ 21	⬆ 4	⬆ 2				87.4	12.6
104	Nerdfighters for Mersenne Primes	16227	⬇ 1	⬆ 2	⬇ 1		2.9		80.9	16.3
105	The Fellowship of Infinity	14789	⬆ 48	⬆ 9	⬆ 4	⬆ 1			99.5	0.5
106	GIMPS.Portugal	14620	⬇ 1	⬇ 2	⬆ 1	⬆ 2	0.1	71.6		28.3
107	moeses	14214	⬆ 3	⬆ 1	⬆ 4	⬆ 4			99.5	0.5
108	Granada	14018	⬇ 2	⬇ 3		⬆ 1	34.7		5.5	59.3
109	MurrayInfoSys	13825	⬆ 14	⬆ 10	⬆ 6	⬆ 3			62.4	37.6
110	Hyperion	13775	⬆ 2	⬇ 1					1.9	29.8
111	youngfun429	13570	⬇ 3	⬇ 9	⬇ 5	⬇ 4			57.1	42.9
112	MES22-Team	13207	⬇ 15	⬇ 13	⬇ 8	⬇ 7	100.0
113	SETI.Germany	12708	⬆ 5	⬇ 2	⬇ 1			7.5	24.9	67.6
114	ᕙ(⇀‸↼‶)ᕗ	12611	⬆ 37	⬆ 20	⬆ 2	⬆ 2			99.6	0.4
115	Die Zeitfinder	11543	⬇ 2	⬇ 5	⬇ 1	⬇ 1			100.0
116	FreeBSD	11273	⬇ 9	⬇ 13	⬇ 3	⬇ 1	24.5		66.9	8.5
117	Mensa	10750			⬆ 1				65.3	34.7
118	Royal Military College of Canada	10691	⬆ 123	⬆ 5	⬆ 1		89.7		7.9	2.4
119	VIPR	10528		⬇ 3	⬇ 2				74.2	25.8
120	Abacus	10321	⬆ 7	⬆ 4					92.1	7.8
121	nmbarek_team	9947	⬇ 1	⬆ 1	⬆ 2				99.8	0.2
122	Triangle	9554	⬇ 7	⬆ 3	⬆ 3				96.6	3.4
123	TurkishMath	9327	⬇ 2	⬇ 2	⬇ 2				91.8	8.2
124	Syntony	9241	⬆ 2	⬆ 2	⬆ 2					100.0
125	Shaffer's Studio	8963	⬆ 3	⬆ 2	⬇ 1				86.1	13.8
126	JiBoTeam	8903	⬆ 4	⬆ 5	⬆ 1					100.0
127	Server66	8528	⬇ 2	⬆ 2	⬆ 1		100.0
128	Turku	8486	⬇ 33	⬇ 16	⬇ 6				100.0
129	irowiki	8045	⬇ 5	⬇ 1						100.0
130	Furry Primes	8022	⬆ 5	⬆ 2			58.8		27.1	14.1
131	Aiblspitz	7672	⬆ 10	⬆ 6	⬆ 2		2.2	58.3	20.6	16.8	2.2
132	Team Splunk	7605	⬆ 2	⬆ 3				28.1	71.9
133	Brasil	7108	⬇ 1		⬇ 2				76.7	23.3
134	University of Waterloo	6873	⬆ 21	⬆ 10					91.1	8.9
135	WSU Cougars	6864	⬆ 5	⬆ 3					56.6	43.3
136	Prime Rib	6840	⬇ 22	⬇ 23					97.2	2.8
137	SU Prime Pirates	6437	⬆ 5	⬆ 5					61.5	38.5
138	International School of Beijing (ISB)	6436	⬇ 7	⬆ 5					99.7	0.3
139	Black Mesa	6294	⬇ 35	⬇ 19					89.8	10.2
140	Team Christensen	6187	⬇ 1		⬆ 1					100.0
141	Elisabeth-von-Thadden-Schule	6033	⬆ 7	⬆ 7	⬆ 1				38.4	61.6
142	teamMALI	5797	⬆ 4	⬆ 7	⬆ 1	⬆ 1			86.9	13.1
143	The_Dude_Abides	5771	⬇ 27	⬇ 4	⬇ 3	⬇ 1	34.7			56.2
144	GIMPS Romania	5527	⬇ 1	⬆ 2	⬆ 1				100.0
145	Optimists Prime	5374	⬇ 1	⬆ 2	⬆ 2			54.9	41.1	4.0
146	Com Systems (RU)	5363	⬆ 95	⬆ 15	⬆ 7				58.0	42.0
147	zeit	5314	⬇ 14	⬇ 6	⬇ 3	⬆ 1	3.2			96.8
148	3DCenter.org	5310	⬇ 11	⬇ 3	⬇ 2	⬇ 1					100.0
149	Danpi for GIMPS	4710	⬆ 3	⬆ 2	⬇ 1		100.0
150	ANDY	4448	⬆ 7	⬆ 2					99.3	0.6
151	The East Coast	4426	⬇ 49	⬇ 15			99.3	0.7
152	Hong Kong GIMP	4419	⬆ 11	⬆ 7	⬇ 3				70.6	29.4
153	Kabylie	4383	⬆ 7	⬆ 1	⬇ 1		15.0	4.6	35.5	44.8	0.1
154	Olympic College	4382		⬆ 1	⬆ 3					100.0
155	GIMPS.Hong Kong	4032	⬆ 3	⬆ 3			3.1		57.6	39.2
156	NUST	3962	⬆ 85	⬆ 56	⬆ 6		16.4	72.9		10.7
157	TunisianTeam	3609	⬇ 8	⬇ 1	⬆ 1				21.4	78.6
158	I Love Canadian Natural Resources	3472	⬆ 12	⬆ 2	⬆ 1					100.0
159	Phi Kappa Theta	3342	⬆ 15	⬆ 9	⬆ 1				70.6	29.4
160	Artists of Fine Art	3302	⬇ 31	⬇ 10	⬇ 6				92.6	7.3
161	alan145	3295		⬇ 4	⬇ 5		81.9	2.4		0.2	15.5
162	Zorin OS Crew	3201	⬇ 6		⬇ 1				70.1	29.9
163	Team_Brazil	2999	⬆ 5	⬆ 2	⬆ 1		83.1	0.2		16.7
164	Saudi Primes	2864	⬆ 5	⬆ 3	⬆ 1					100.0
165	EggCelentes	2574	⬆ 7	⬆ 5	⬆ 1				42.1	57.9
166	Subprime Searches	2375	⬇ 7	⬆ 5	⬆ 1		100.0
167	VRS_SE	2359	⬆ 19	⬆ 5	⬆ 1				66.8	33.2
168	Czech National Team	2331	⬇ 23	⬇ 15	⬆ 1		1.6		68.7	28.4	0.8
169	UCLA Linux Users Group	2303	⬇ 19	⬇ 6	⬆ 1				100.0
170	His Dark Materials	2200	⬇ 8	⬇ 1	⬆ 1					48.7	51.3
171	Team Arizona	2197	⬇ 7	⬆ 3	⬆ 1				100.0
172	BrainStone	2093	⬇ 5	⬇ 8	⬇ 9					100.0
173	Korea.Prime	2075	⬆ 68	⬆ 19	⬆ 16				75.3	24.7
174	The Pensis	1869	⬆ 4	⬆ 2	⬇ 1					100.0
175	F=dp/dt	1845	⬆ 4	⬆ 2	⬇ 1				85.8	14.2
176	GIMPS_IOM	1712	⬆ 6	⬆ 3	⬇ 1		100.0
177	Crunching@EVGA	1668	⬆ 64	⬆ 61	⬇ 1				100.0
178	RobotechResearch	1594	⬆ 63	⬆ 2	⬇ 1				100.0
179	San Francisco	1586	⬆ 6	⬆ 2	⬇ 1				100.0
180	NanJing Tech	1581	⬆ 61	⬆ 58	⬆ 55				100.0
181	Obsidian	1561		⬆ 10	⬇ 2					100.0
182	NuggetFarms	1527	⬇ 35	⬇ 9	⬇ 2				100.0
183	hreid	1487	⬆ 17	⬆ 1	⬇ 2				100.0
184	TimE4This	1481	⬇ 9	⬆ 2	⬇ 2					100.0
185	FactorMania	1474	⬆ 56	⬆ 43	⬆ 5			67.5			32.5
186	OcUK - Overclockers UK	1409	⬇ 13	⬆ 1	⬇ 3				100.0
187	Primos Brazucas	1397	⬇ 21	⬇ 21	⬇ 3				100.0
188	Happy	1341	⬇ 11		⬇ 3						99.9
189	Math_Lovers	1317	⬇ 1		⬇ 3					100.0
190	Noam Karni Team	1316	⬆ 31		⬇ 3				60.1	39.9
191	México mágico	1302	⬆ 27	⬇ 6	⬇ 3				60.4	39.6
192	GIMPSMalaysia	1244	⬆ 49	⬆ 22	⬇ 1				63.9	36.0
193	The Prime Pioneers	1058	⬇ 1	⬆ 4			28.6	34.4		24.0	12.7
194	Manri Costa Rica	984	⬇ 29	⬇ 16					77.7	22.3
195	University of California, Santa Barbara	970	⬇ 24	⬇ 12					80.2	19.8
196	GIMPS Asturias	794	⬇ 1	⬆ 2					99.6	0.4
197	Weatopians	793		⬆ 2					99.7	0.3
198	Sæve Nordic Prime	792	⬇ 2	⬆ 2					98.6
199	crazyBerlin	777	⬇ 61	⬇ 17					99.6	0.4
200	ISISS Valle Seriana	774	⬇ 13	⬆ 1					97.8	2.1
201	cr_colorado	613	⬇ 12	⬇ 8					100.0
202	SGDynamo Dresden	581	⬆ 4				100.0
203	Team Bulgaria	579	⬆ 1							36.7	63.2
204	Unteranger Primelurche	576	⬆ 4							100.0
205	GIMPS_KS	554	⬆ 36	⬆ 30	⬆ 25					94.5	5.5
206	TeamEc	552	⬆ 3	⬇ 1	⬇ 1					75.6	24.4
207	PrimeObsession	521	⬆ 34	⬆ 31	⬆ 28	⬆ 27				100.0
208	Team Dominik Radler	520	⬇ 1	⬇ 2	⬇ 2	⬇ 1	100.0
209	math.auth.gr	518	⬆ 4	⬇ 2	⬇ 2	⬇ 1				100.0
210	Join Us 😈	517	⬆ 4	⬇ 2	⬇ 2	⬇ 1	100.0
211	Prime-UAE	502	⬇ 31	⬇ 2	⬇ 2	⬇ 1				100.0
212	Name (t) = A x e^kt	483	⬆ 4	⬇ 2	⬇ 2	⬇ 1				100.0
213	London Computation Club	478	⬆ 4	⬇ 2	⬇ 2	⬇ 1				100.0
214	Team Ribbs	336	⬇ 15	⬆ 1	⬇ 2	⬇ 1				100.0
215	KnightLight	315	⬆ 4	⬆ 1	⬇ 2	⬇ 1				99.3
216	Team Ireland	280	⬇ 32	⬇ 22	⬇ 2	⬇ 1				100.0
217	Free-DC	266	⬇ 7		⬇ 2	⬇ 1				100.0
218	www.Adamek.biz	265	⬆ 2		⬇ 2	⬇ 1				100.0
219	Math Teachers of the World	259	⬇ 4		⬇ 2	⬇ 1			100.0
220	GIMPS Hams	253	⬆ 2		⬇ 2	⬇ 1		100.0
221	The Goodest Team	253	⬆ 2		⬇ 2	⬇ 1				100.0
222	Lithuania LT	247	⬇ 21		⬇ 2	⬇ 1				100.0
223	yfinder	208	⬆ 3		⬇ 2	⬇ 1				100.0
224	30thousandwon	193	⬇ 26	⬇ 11	⬇ 2	⬇ 1				100.0
225	DividerHunt	190	⬆ 16		⬇ 2	⬇ 1	100.0
226	/r/counting	175	⬆ 5	⬆ 1	⬇ 1	⬇ 1
227	Team CH	159	⬆ 2	⬆ 2	⬇ 1	⬇ 1				100.0
228	TeamUbuntu	121	⬆ 4	⬆ 2	⬇ 1	⬇ 1				100.0
229	GIMPS.Peace	109	⬆ 12	⬆ 2	⬇ 1	⬇ 1	50.0	50.0
230	FourthFloorFourEyes	46	⬇ 37	⬆ 2	⬇ 1	⬇ 1	100.0
231	PROMYS	23	⬆ 3	⬆ 2		⬇ 1					100.0
232	sannerud.com	22	⬆ 3	⬆ 2		⬇ 1					100.0
233	ALGERIA	16	⬆ 4	⬆ 3		⬇ 1					100.0
234	CZAsTc	3	⬆ 6	⬆ 3		⬇ 1				95.0