4 911 887 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 2⁶⁵

Factored

Factor	Digits	Bits	Date
102635216008350463	18	56.5	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	E6D776405D3437D7	1	0	1	3
Verified	PRP without proof (not generated)	2018-05-07	storm5510	E6D776405D3437D7	1	1043243	1	3
Verified	PRP without proof (not generated)	2018-05-25	kracker	E6D776405D3437D7	1	2009791	1	3

History

Date	User	Type	Result
2022-10-28	USAFSS	NF-PM1	B1=260000, B2=167750730
2018-05-25	kracker	C-PRP	M4911887/102635216008350463 : E6D776405D3437D7
2018-05-07	storm5510	C-PRP	M4911887/102635216008350463 : E6D776405D3437D7
2017-09-20	kkmrkkblmbrbk	C-PRP	M4911887/102635216008350463 : E6D776405D3437D7
2000-06-29	-anonymous-	F	Factor: 102635216008350463
2000-06-26	-anonymous-	F	Factor: 102635216008350463
1998-05-01	-anonymous-	F	Factor: 102635216008350463

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