2 005 261 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
2134732681727	13	41.0	old
5532630007048517957561	22	72.2	2021-07-25 00:01:16

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	164 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 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	1FB1BAED7BBABAA2	1	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	1FB1BAED7BBABAA2	1	1080617	1	3
Verified	2021-07-25	SRJ2877	597EC0DC034DC67C	2	1573687	5	3

History

Date	User	Type	Result
2021-07-25	jkoster	CERT	PRP Certification Proof certified good
2021-07-25	SRJ2877	C-PRP	M2005261/2134732681727/5532630007048517957561 : 597EC0DC034DC67C PRP proof power = 7 PRP: Verified Proof certified good
2021-07-25	_p95holder_	F-ECM	Factor: 5532630007048517957561 / (ECM curve 7, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2005261/2134732681727 : 1FB1BAED7BBABAA2 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2005261/2134732681727 : 1FB1BAED7BBABAA2 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12