3 892 741 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
23356447	8	24.5	old
405969562323884278542943	24	78.4	2021-07-19 23:55:15

ECM

Digits	B1	Curves
25	50000	23 / 280

Estimated T-Level: 20.4 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	91D22A4814643A51	1	0	1	3
Verified (Factored)	2017-12-27	Oliver Kruse	91D22A4814643A51	1	901262	1	3
Verified	2021-07-20	ATH	6AA3FE3A2BBAF48F	2	1999334	5	3

History

Date	User	Type	Result
2022-09-29	Joss	NF-PM1	B1=1000000, B2=130364850
2022-05-20	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-26	Joss	NF	no factor from 2^67 to 2^68
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-02	Joss	NF-PM1	B1=90000
2021-07-20	curtisc	CERT	PRP Certification Proof certified good
2021-07-20	ATH	C-PRP	M3892741/23356447/405969562323884278542943 : 6AA3FE3A2BBAF48F PRP proof power = 7 PRP: Verified Proof certified good
2021-07-19	ATH	F-PP1	Start=2/7, B1=1000000, B2=100000000, Factor: 405969562323884278542943
2020-11-07	Joss	NF-PM1	B1=389274
2020-11-05	Joss	NF-PM1	B1=389274, B2=3892741, E=6
2017-12-27	Oliver Kruse	C-PRP	M3892741/23356447 : 91D22A4814643A51 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3892741/23356447 : 91D22A4814643A51 PRP: Verified (Factored) PRP without proof (not generated)