3 861 983 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁴

Factored

Factor	Digits	Bits	Date
845920827298150633	18	59.6	old

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	0071DE5446B1DDAC	1	0	1	3
Verified	PRP without proof (not generated)	2017-12-22	storm5510	0071DE5446B1DDAC	1	534491	1	3

History

Date	User	Type	Result
2022-05-27	Joss	NF-PM1	B1=200000, B2=130364850
2020-11-06	Joss	NF-PM1	B1=386198, B2=3861983
2017-12-22	storm5510	C-PRP	M3861983/845920827298150633 : 0071DE5446B1DDAC
2017-09-20	kkmrkkblmbrbk	C-PRP	M3861983/845920827298150633 : 0071DE5446B1DDAC

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