1 878 733 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
188426878504223591	18	57.4	old
792382272147931700993	21	69.4	2020-12-14 08:53:10
6679617505067635978039	22	72.5	2021-10-20 13:17:49

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	Shift
Verified (Factored)		Dan Woerner	018D54D34B475A2C	0
Verified (Factored)	1998-12-13	Bruce Mitchell	018D54D34B475A2C	1828796

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	932F175F7D021751	1	0	1	3
Verified (Factored)	2017-11-08	kkmrkkblmbrbk	932F175F7D021751	1	648069	1	3
Verified (Factored)	2020-12-19	M8909387	F27E0649921E29CE	2	1084108	5	3
Verified	2021-10-22	JackBlock	F27E0649921E29CE	3	1728623	5	3

History

Date	User	Type	Result
2021-10-22	jeriffee	CERT	PRP Certification Proof certified good
2021-10-22	JackBlock	C-PRP	M1878733/188426878504223591/792382272147931700993/6679617505067635978039 : F27E0649921E29CE PRP proof power = 7 PRP: Verified Proof certified good
2021-10-20	TJAOI	F-ECM	Factor: 6679617505067635978039 / (ECM curve 5, B1=50000, B2=6600000)
2020-12-19	Ben Delo	CERT	PRP Certification Proof certified good
2020-12-19	M8909387	C-PRP	M1878733/188426878504223591/792382272147931700993 : F27E0649921E29CE PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-12-14	MarkS	F-ECM	Factor: 792382272147931700993 / (ECM curve 6, B1=50000, B2=5000000, Sigma=4529343395870904)
2017-11-08	kkmrkkblmbrbk	C-PRP	M1878733/188426878504223591 : 932F175F7D021751 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1878733/188426878504223591 : 932F175F7D021751 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12