1 878 769 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
56363071	8	25.7	old
210422129	9	27.6	2008-07-15 07:47:46
497404092751	12	38.9	2008-07-15 07:47:46
7576037646457927	16	52.8	2014-08-22 11:41:15
205599534872589364260191	24	77.4	2021-09-24 05:24:54

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	4493DC640D57CD58	4	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	4493DC640D57CD58	4	409940	1	3
Verified	2021-09-24	SRJ2877	27FDD7DA20BFF9DC	5	11690	5	3

History

Date	User	Type	Result
2021-09-24	overclocked_by_default	CERT	PRP Certification Proof certified good
2021-09-24	SRJ2877	C-PRP	M1878769/56363071/210422129/497404092751/7576037646457927/205599534872589364260191 : 27FDD7DA20BFF9DC PRP proof power = 7 PRP: Verified Proof certified good
2021-09-24	_p95holder_	F-ECM	Factor: 205599534872589364260191 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1878769/56363071/210422129/497404092751/7576037646457927 : 4493DC640D57CD58 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1878769/56363071/210422129/497404092751/7576037646457927 : 4493DC640D57CD58 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1878769/56363071/210422129/497404092751/7576037646457927 : 4493DC640D57CD58 PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-08-22	TJAOI	F	Factor: 7576037646457927
2008-07-15	J Feitsma	F	Factor: 497404092751
2008-07-15	J Feitsma	F	Factor: 210422129