3 863 521 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
10524408925967	14	43.3	old
220256663030497303153	21	67.6	2022-11-17 09:48:58

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
Factored	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	E6DD1F6947383ADC	1	0	1	3
Factored	PRP without proof (not generated)	2017-12-23	storm5510	E6DD1F6947383ADC	1	3198230	1	3
Verified	Certified Good	2022-11-19	LordJulius	CFD7C92F90CC7435	2	1132318	5	3

History

Date	User	Type	Result
2022-11-19	Ben Delo	CERT	Proof certified good
2022-11-19	LordJulius	C-PRP	M3863521/10524408925967/220256663030497303153 : CFD7C92F90CC7435 Proof Certified Good Proof Power: 7
2022-11-17	TJAOI	F	Factor: 220256663030497303153
2022-05-29	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-03	Joss	NF-PM1	B1=90000
2017-12-23	storm5510	C-PRP	M3863521/10524408925967 : E6DD1F6947383ADC
2017-09-20	kkmrkkblmbrbk	C-PRP	M3863521/10524408925967 : E6DD1F6947383ADC