2 366 939 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
1619880978943	13	40.6	old
131241159159047671	18	56.9	2015-05-06 11:44:28
40928229783033417729106217	26	85.1	2025-04-30 11:17:37

ECM

Digits	B1	Curves
25	50000	209 / 280

Estimated T-Level: 23.7 ⓘ

TF below 2^74 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-12	Oliver Kruse	60B58C23232278B6	2	894897	5	3
Verified (Factored)	2017-11-25	kkmrkkblmbrbk	60B58C23232278B6	2	2292222	5	3
Verified	2025-04-30	JC_Herles	60B58C23232278B6	3	651698	5	3

History

Date	User	Type	Result
2025-04-30	Chuck	CERT	PRP Certification Proof certified good
2025-04-30	JC_Herles	C-PRP	M2366939/1619880978943/131241159159047671/40928229783033417729106217 : 60B58C23232278B6 PRP proof power = 7 PRP: Verified Proof certified good
2025-04-30	JC_Herles	F-ECM	Factor: 40928229783033417729106217 / (ECM curve 40, B1=78657, B2=169427178, Edwards Sigma=586438098666044)
2018-04-27	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-25	kkmrkkblmbrbk	C-PRP	M2366939/1619880978943/131241159159047671 : 60B58C23232278B6 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-12	Oliver Kruse	C-PRP	M2366939/1619880978943/131241159159047671 : 60B58C23232278B6 PRP: Verified (Factored) PRP without proof (not generated)
2015-05-06	TJAOI	F	Factor: 131241159159047671 / TF: 56-57