1 833 347 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
14666777	8	23.8	old
12290758289	11	33.5	2008-07-15 07:47:12
15542281663781449	17	53.8	2014-10-13 11:11:28
3125386060695281535132263537	28	91.3	2020-11-26 10:34:01

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)	2017-10-02	alpertron	B4FEFC1F15C4F976	3	0	1	3
Verified (Factored)	2017-10-19	Oliver Kruse	B4FEFC1F15C4F976	3	664874	1	3
Verified	2020-11-26	mrh	29C349256393FFFC	4	1368989	5	3

History

Date	User	Type	Result
2020-11-26	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-26	mrh	C-PRP	M1833347/14666777/12290758289/15542281663781449/3125386060695281535132263537 : 29C349256393FFFC PRP proof power = 7 PRP: Verified Proof certified good
2020-11-26	nordi	F-ECM	Factor: 3125386060695281535132263537 / (ECM curve 3, B1=50000, B2=5000000, Sigma=5180890973066249)
2017-10-19	Oliver Kruse	C-PRP	M1833347/14666777/12290758289/15542281663781449 : B4FEFC1F15C4F976 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-02	alpertron	C-PRP	M1833347/14666777/12290758289/15542281663781449 : B4FEFC1F15C4F976 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-10-13	TJAOI	F	Factor: 15542281663781449 / TF: 53-54
2008-07-15	J Feitsma	F	Factor: 12290758289