4 429 631 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
850116101278813591	18	59.6	old
126919027947383955329	21	66.8	2019-01-19 11:24:16

ECM

Digits	B1	Curves
25	50000	10 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	9A578D6EA72C0AAF	1	0	1	3
Verified (Factored)	2018-02-13	Oliver Kruse	9A578D6EA72C0AAF	1	3692908	1	3
Verified	2019-01-20	artorollo	08F2E4F2789F6570	2	2688643	5	3
Verified	2019-01-21	kkmrkkblmbrbk	08F2E4F2789F6570	2	3682327	5	3

History

Date	User	Type	Result
2023-06-11	USAFSS	NF-PM1	B1=336000, B2=220317240
2019-01-21	kkmrkkblmbrbk	C-PRP	M4429631/850116101278813591/126919027947383955329 : 08F2E4F2789F6570 PRP: Verified PRP without proof (not generated)
2019-01-20	artorollo	C-PRP	M4429631/850116101278813591/126919027947383955329 : 08F2E4F2789F6570 PRP: Verified PRP without proof (not generated)
2019-01-19	MarkS	F-ECM	Factor: 126919027947383955329 / (ECM curve 1, B1=50000, B2=5000000)
2018-02-13	Oliver Kruse	C-PRP	M4429631/850116101278813591 : 9A578D6EA72C0AAF PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4429631/850116101278813591 : 9A578D6EA72C0AAF PRP: Verified PRP without proof (not generated)