361 871 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
963527899000135771872944685451001	33	109.6	2019-04-04 07:19:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	275 / 640

Estimated T-Level: 27.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	2646	0
Verified (Factored)		Conrad Curry	B30084262D432646	0
Verified (Factored)		Klaus Kastens	B30084262D432646	0
Verified (Factored)		Eivind Triel	B30084262D432646	161745
Verified (Factored)	2016-06-01	MadPoo	B30084262D432646	311533

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-04	ATH	B2E3EE1D05C72693	1	24233	5	3
Verified	2019-04-05	kkmrkkblmbrbk	B2E3EE1D05C72693	1	344829	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-05	kkmrkkblmbrbk	C-PRP	M361871/963527899000135771872944685451001 : B2E3EE1D05C72693 PRP: Verified PRP without proof (small exponent)
2019-04-04	ATH	C-PRP	M361871/963527899000135771872944685451001 : B2E3EE1D05C72693 PRP: Verified PRP without proof (small exponent)
2019-04-04	alex	F-ECM	Factor: 963527899000135771872944685451001 / (ECM curve 25, B1=250000, B2=25000000, Sigma=1928294696129288)
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2018-02-14	BloodERazor	NF	no factor from 2^64 to 2^65
2016-11-20	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	B30084262D432646
2015-12-21	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-21	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-26	NR	NF	no factor from 2^61 to 2^62
2013-05-11	lycorn	NF	no factor from 2^60 to 2^61
2012-03-07	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2012-03-05	Joss	NF-PM1	B1=1551383
2011-08-14	Joss	NF-PM1	B1=1241106
2009-02-06	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-30	Sturle Sunde	NF	no factor from 2^58 to 2^59