1 777 043 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶¹

Factored

Factor	Digits	Bits	Date
103463302244900953	18	56.5	2010-12-13 03:33:12
28802699743371548231	20	64.6	2017-11-30 12:19:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Tom McPharlin	CA3C89254FF34D52	0	Windows,Prime95,v11,(aka WC)
Factored	1998-12-06	Jakob Trier	CA3C89254FF34D52	474623	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Shift	Type	Base
Factored	Certified Good Power=6	2025-09-02	Kriesel	88C3A20C59F97EEA	0	1	3

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	PRP without proof (not generated)	2017-10-03	Oliver Kruse	C907EE4AB255E16A	1	0	1	3
Factored	PRP without proof (not generated)	2017-11-04	ATH	C907EE4AB255E16A	1	967680	1	3
Verified	PRP without proof (not generated)	2017-12-02	Oliver Kruse	88C3A20C59F97EEA	2	193854	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	88C3A20C59F97EEA	2	1260025	5	3

History

Date	User	Type	Result
2025-09-03	Carlos Pinho	CERT	Proof certified good
2025-09-02	Kriesel	C-PRP	88C3A20C59F97EEA Proof Certified Good Proof Power: 6
2022-03-08	LordJulius	NF	no factor TF: 62-63
2022-03-08	LordJulius	NF	no factor TF: 63-64
2022-03-08	LordJulius	NF	no factor TF: 58-60
2022-03-08	LordJulius	NF	no factor TF: 61-62
2017-12-02	storm5510	C-PRP	M1777043/103463302244900953/28802699743371548231 : 88C3A20C59F97EEA
2017-12-02	Oliver Kruse	C-PRP	M1777043/103463302244900953/28802699743371548231 : 88C3A20C59F97EEA
2017-11-30	TJAOI	F	Factor: 28802699743371548231
2017-11-04	ATH	C-PRP	M1777043/103463302244900953 : C907EE4AB255E16A
2017-10-03	Oliver Kruse	C-PRP	M1777043/103463302244900953 : C907EE4AB255E16A
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2010-12-13	GrunwalderGIMP	F-ECM	Factor: 103463302244900953
2010-04-20	Architects Cubed	NF	no factor TF: 60-61
2003-01-25	-anonymous-	NF	no factor TF: 1-58
1998-12-06	-anonymous-	C-LL	CA3C89254FF34D52