3 861 743 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶⁴

Factored

Factor	Digits	Bits	Date
75975931783	11	36.1	old
5075225343087247097	19	62.1	2016-07-01 07:30:46

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	1AE6B344A5EC9687	2	0	1	3
Verified	PRP without proof (not generated)	2017-12-21	storm5510	1AE6B344A5EC9687	2	3792762	1	3

History

Date	User	Type	Result
2022-05-20	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-02	Joss	NF-PM1	B1=90000
2017-12-21	storm5510	C-PRP	M3861743/75975931783/5075225343087247097 : 1AE6B344A5EC9687
2017-09-20	kkmrkkblmbrbk	C-PRP	M3861743/5075225343087247097/75975931783 : 1AE6B344A5EC9687
2016-07-01	TJAOI	F	Factor: 5075225343087247097

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