8 999 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^165 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	65000000000
B2 =	251099672798124150

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	10226 / 40830

Estimated T-Level: 51.3 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	3C15	0
Verified		George Woltman	6AACEAADE737BC15	0
Verified		Brian J. Beesley	6AACEAADE737BC15	0
Verified	2015-04-11	MadPoo	6AACEAADE737BC15	3162

History

Date	User	Type	Result
2023-08-18	masser	NF-PP1	Start=6/5, B1=920000000, B2=164680000000
2023-07-25	JacobZ	NF-PM1	B1=65000000000, B2=251099672798124150
2023-07-10	masser	NF-PP1	Start=125/71, B1=920000000, B2=36800000000
2022-06-15	Anton Repko	NF	no factor from 2^64 to 2^66
2021-05-13	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-01-01	Ruslan Borisov	NF	no factor from 2^64 to 2^65
2018-10-16	snme2pm1	NF	no factor from 2^63 to 2^64
2017-01-03	mikr	NF-PM1	B1=60000000000, B2=4800000000000, E=12
2016-11-10	-Anonymous-	NF-PM1	B1=100000000000, B2=1000000000000, E=12
2016-11-10	-Anonymous-	NF-PM1	B1=40000000000, B2=400000000000, E=12
2016-11-06	snme2pm1	NF	no factor from 2^62 to 2^63
2016-11-05	-Anonymous-	NF-PM1	B1=20000000000, B2=200000000000, E=12
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-08-13	Sid & Andy	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	6AACEAADE737BC15
2014-02-09	c10ck3r	NF-PM1	B1=10000000000, B2=200000000000, E=12
2012-11-08	bcp19	NF	no factor from 2^60 to 2^61
2010-08-10	chalsall	NF	no factor from 2^59 to 2^60
2010-08-10	chalsall	NF	no factor from 2^58 to 2^59