4 764 203 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
123869279	9	26.9	old
3681633152311	13	41.7	2008-09-30 21:36:12
726742410842429183	18	59.3	2015-11-12 11:43:39
78217557415660256887	20	66.1	2019-05-12 21:47:29

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	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-20	Oliver Kruse	AB942DA93143FE96	3	342593	5	3
Verified (Factored)	2018-01-05	kkmrkkblmbrbk	AB942DA93143FE96	3	1836553	5	3
Verified	2019-05-13	artorollo	AB942DA93143FE96	4	2695995	5	3

History

Date	User	Type	Result
2023-10-08	USAFSS	NF-PM1	B1=240000, B2=91991760
2019-05-13	artorollo	C-PRP	M4764203/123869279/3681633152311/726742410842429183/78217557415660256887 : AB942DA93143FE96 PRP: Verified PRP without proof (not generated)
2019-05-12	MarkS	F-ECM	Factor: 78217557415660256887 / (ECM curve 3, B1=50000, B2=5000000)
2018-01-05	kkmrkkblmbrbk	C-PRP	M4764203/123869279/3681633152311/726742410842429183 : AB942DA93143FE96 PRP: Verified PRP without proof (not generated)
2017-11-20	Oliver Kruse	C-PRP	M4764203/123869279/3681633152311/726742410842429183 : AB942DA93143FE96 PRP: Verified PRP without proof (not generated)
2015-11-12	TJAOI	F	Factor: 726742410842429183 / TF: 59-60
2008-09-30	markr	F	Factor: 3681633152311