4 573 937 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
81041015767	11	36.2	old
541435218439	12	39.0	2008-09-07 23:42:06
94453493363530023089	20	66.4	2019-02-10 10:16:14

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	8548B9A56ED3E87B	2	3603525	5	3
Verified (Factored)	2018-02-24	Oliver Kruse	8548B9A56ED3E87B	2	769432	5	3
Verified	2019-02-11	artorollo	8548B9A56ED3E87B	3	4129028	5	3

History

Date	User	Type	Result
2023-04-28	USAFSS	NF-PM1	B1=480000, B2=259792470
2019-02-11	artorollo	C-PRP	M4573937/81041015767/541435218439/94453493363530023089 : 8548B9A56ED3E87B PRP: Verified PRP without proof (not generated)
2019-02-10	Samuel Schmidt	F-ECM	Factor: 94453493363530023089 / (ECM curve 1, B1=50000, B2=5000000)
2018-02-24	Oliver Kruse	C-PRP	M4573937/81041015767/541435218439 : 8548B9A56ED3E87B PRP: Verified PRP without proof (not generated)
2017-11-17	kkmrkkblmbrbk	C-PRP	M4573937/81041015767/541435218439 : 8548B9A56ED3E87B PRP: Verified PRP without proof (not generated)
2008-09-07	Will Edgington	F	Factor: 541435218439