3 862 237 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
486641863	9	28.9	old
60820870687513	14	45.8	2014-01-29 11:43:32

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	2F69F6DF434A14F9	2	0	1	3
Verified	PRP without proof (not generated)	2017-12-24	storm5510	2F69F6DF434A14F9	2	2160121	1	3

History

Date	User	Type	Result
2022-05-23	Joss	NF-PM1	B1=200000, B2=130364850
2022-04-17	Joss	NF-PM1	B1=200000
2017-12-24	storm5510	C-PRP	M3862237/486641863/60820870687513 : 2F69F6DF434A14F9
2017-09-20	kkmrkkblmbrbk	C-PRP	M3862237/486641863/60820870687513 : 2F69F6DF434A14F9
2014-01-29	TJAOI	F	Factor: 60820870687513

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