1 083 911 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
572305009	9	29.1	old
24089603270014490956607	23	74.4	2017-06-16 12:33:20

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	104 / 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	Type	Base
Verified (Factored)	2025-09-01	Kriesel	8547534D12A69197	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-28	Oliver Kruse	E007881CA1724057	2	0	1	3
Verified	2017-10-16	Oliver Kruse	E007881CA1724057	2	609766	1	3
Verified	2018-01-02	ATH	E007881CA1724057	2	648061	1	3

History

Date	User	Type	Result
2025-09-01	Risto A. Paju	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	8547534D12A69197 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2024-10-04	timc995	NF-PM1	B1=2000000, B2=63130867800
2018-01-02	ATH	C-PRP	M1083911/572305009/24089603270014490956607 : E007881CA1724057 PRP: Verified PRP without proof (not generated)
2017-10-16	Oliver Kruse	C-PRP	M1083911/572305009/24089603270014490956607 : E007881CA1724057 PRP: Verified PRP without proof (not generated)
2017-09-28	Oliver Kruse	C-PRP	M1083911/572305009/24089603270014490956607 : E007881CA1724057 PRP: Verified PRP without proof (not generated)
2017-06-16	TJAOI	F-ECM	Factor: 24089603270014490956607 / (ECM curve 85, B1=50000, B2=5000000)