1 098 301 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁰

Factored

Factor	Digits	Bits	Date
369029137	9	28.5	old
1001650513	10	29.9	2008-07-16 09:31:22
126779153314276922691119	24	76.7	2017-03-31 11:16:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

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

Status	Proof	Date	User	Residue	Shift	Type	Base
Factored	Certified Good Power=6	2025-09-01	Kriesel	A5618F6A593E119B	0	1	3

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-05	Oliver Kruse	B4F1943B3FFE1474	3	0	1	3
Verified	PRP without proof (not generated)	2017-10-19	kkmrkkblmbrbk	B4F1943B3FFE1474	3	893283	1	3

History

Date	User	Type	Result
2025-09-02	pilot no more	CERT	Proof certified good
2025-09-01	Kriesel	C-PRP	A5618F6A593E119B Proof Certified Good Proof Power: 6
2024-10-12	timc995	NF-PM1	B1=2000000, B2=110685865290
2017-10-19	kkmrkkblmbrbk	C-PRP	M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
2017-10-05	Oliver Kruse	C-PRP	M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
2017-09-29	Oliver Kruse	C-PRP	M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
2017-03-31	TJAOI	F-ECM	Factor: 126779153314276922691119
2008-07-16	J Feitsma	F	Factor: 1001650513