2 201 669 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
281813633	9	28.1	old
1924721742666563879	19	60.7	2016-03-02 12:15:46
1638814006867255826417	22	70.5	2022-05-12 00:38:01

ECM

Digits	B1	Curves
25	50000	110 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	Oliver Kruse	7FF273B1CD3DCCDD	2	0	1	3
Verified (Factored)	2017-11-19	kkmrkkblmbrbk	7FF273B1CD3DCCDD	2	68374	1	3
Verified	2022-05-12	aperson1	618E407AA862EAF6	3	191890	5	3

History

Date	User	Type	Result
2022-05-12	Jim Donovan	CERT	PRP Certification Proof certified good
2022-05-12	aperson1	C-PRP	M2201669/281813633/1924721742666563879/1638814006867255826417 : 618E407AA862EAF6 PRP proof power = 7 PRP: Verified Proof certified good
2022-05-12	debrouxl	F-ECM	Factor: 1638814006867255826417 / (ECM curve 1, B1=50000, B2=6500000, Sigma=3281837171861534)
2021-07-01	Dylan Delgado	NF-PM1	B1=2000000, B2=242000000
2021-06-27	Dylan Delgado	NF-PM1	B1=1000000, B2=103000000
2017-11-19	kkmrkkblmbrbk	C-PRP	M2201669/281813633/1924721742666563879 : 7FF273B1CD3DCCDD PRP: Verified (Factored) PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2201669/281813633/1924721742666563879 : 7FF273B1CD3DCCDD PRP: Verified (Factored) PRP without proof (not generated)
2016-04-06	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2016-03-02	TJAOI	F	Factor: 1924721742666563879 / TF: 60-61