97 301 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 2^132 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	3000000000
B2 =	236135223774450

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2287 / 9201

Estimated T-Level: 41.2 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	178C	0
Verified		Charles F. Kerchner III	F034D719ECA0978C	0
Verified		Brian J. Beesley	F034D719ECA0978C	0
Verified	2015-04-11	MadPoo	F034D719ECA0978C	68332

History

Date	User	Type	Result
2022-09-25	masser	NF-PP1	Start=2/7, B1=10000000, B2=500000000
2022-09-25	masser	NF-PP1	Start=6/5, B1=5000000, B2=215000000
2022-09-25	masser	NF-PP1	Start=184/29, B1=2500000, B2=87500000
2022-08-27	George Woltman	NF-PM1	B1=3000000000, B2=236135223774450
2020-02-09	Yxinity	NF	no factor from 2^65 to 2^66
2020-02-07	Yxinity	NF	no factor from 2^65 to 2^66
2018-08-19	Yxinity	NF	no factor from 2^64 to 2^65
2018-08-19	Yxinity	NF	no factor from 2^64 to 2^65
2017-02-14	snme2pm1	NF	no factor from 2^63 to 2^64
2016-07-03	snme2pm1	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2016-02-23	LaurV	NF	no factor from 2^58 to 2^59
2015-04-11	MadPoo	C-LL	F034D719ECA0978C
2014-11-13	Sid & Andy	NF	no factor from 2^61 to 2^62
2013-11-23	lycorn	NF	no factor from 2^60 to 2^61
2012-08-29	LaurV	NF-PM1	B1=100000000, B2=2000000000, E=12
2009-01-05	Sturle Sunde	NF	no factor from 2^59 to 2^60