326 881 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
7191383	7	22.8	old
943378567	9	29.8	2008-07-21 09:16:52
16160342879	11	33.9	2008-07-21 09:16:52
17103204933447647187244343	26	83.8	2018-01-12 16:37:58
147888345072366942294926266337	30	96.9	2023-01-31 08:42:58

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	258 / 640

Estimated T-Level: 27.0 ⓘ

TF below 2^85 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	DC22BCC4F8230A99	3	0	1	3
Verified (Factored)	2017-10-13	Oliver Kruse	DC22BCC4F8230A99	3	207547	1	3
Verified (Factored)	2017-12-12	ATH	DC22BCC4F8230A99	3	270492	1	3
Verified (Factored)	2018-01-12	ATH	B9D973A5E2832E0C	4	312821	5	3
Verified (Factored)	2018-01-14	Oliver Kruse	B9D973A5E2832E0C	4	54622	5	3
Verified	2023-01-31	Kevin_9611	B9D973A5E2832E0C	5	40939	5	3

History

Date	User	Type	Result
2023-03-20	Denial140	NF-PM1	B1=1000000, B2=20563492950
2023-01-31	curtisc	CERT	PRP Certification Proof certified good
2023-01-31	Kevin_9611	C-PRP	M326881/7191383/16160342879/943378567/17103204933447647187244343/147888345072366942294926266337 : B9D973A5E2832E0C PRP proof power = 5 PRP: Verified Proof certified good
2023-01-31	_p95holder_	F-ECM	Factor: 147888345072366942294926266337 / (ECM curve 2, B1=250000, B2=25000000)
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2018-01-14	Oliver Kruse	C-PRP	M326881/7191383/16160342879/943378567/17103204933447647187244343 : B9D973A5E2832E0C PRP: Verified (Factored) PRP without proof (small exponent)
2018-01-12	ATH	C-PRP	M326881/7191383/16160342879/943378567/17103204933447647187244343 : B9D973A5E2832E0C PRP: Verified (Factored) PRP without proof (small exponent)
2018-01-12	TJAOI	F-ECM	Factor: 17103204933447647187244343 / (ECM curve 24, B1=250000, B2=25000000)
2017-12-12	ATH	C-PRP	M326881/7191383/943378567/16160342879 : DC22BCC4F8230A99 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M326881/7191383/16160342879/943378567 : DC22BCC4F8230A99 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M326881/7191383/16160342879/943378567 : DC22BCC4F8230A99 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M326881/7191383/16160342879/943378567 : DC22BCC4F8230A99 PRP without proof (not generated)
2008-07-21	J Feitsma	F	Factor: 943378567
2008-07-21	J Feitsma	F	Factor: 16160342879