1 952 851 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 2⁶⁸

TF target 2⁶²

TF below 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	32000000
B2 =	10272022740

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	57 / 640

Estimated T-Level: 25.4 ⓘ

Status	Date	User	Residue	Shift
Verified		Emilio Anzon	F65610AC5C83C0E9	0
Verified	1999-01-10	Stephen Wood	F65610AC5C83C0E9	1384218
Verified	2015-07-06	MadPoo	F65610AC5C83C0E9	1723899

History

Date	User	Type	Result
2022-08-14	masser	NF-PP1	Start=2/7, B1=1500000, B2=52500000
2022-08-01	RichD0	NF-PM1	B1=32000000, B2=10272022740
2019-05-13	chuenkit	NF	no factor from 2^67 to 2^68
2018-11-26	Joss	NF-PM1	B1=1952851, B2=244106375, E=12
2018-05-10	Joss	NF-PM1	B1=1952851, B2=195285100, E=12
2018-03-02	Joss	NF-PM1	B1=1952851, B2=120000000, E=12
2018-02-12	Joss	NF-PM1	B1=1952851, B2=60000000, E=12
2018-02-12	TJAOI	NF	no factor from 2^66 to 2^67
2018-01-15	Joss	NF-PM1	B1=1952851, B2=30000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-06	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-06	MadPoo	C-LL	F65610AC5C83C0E9
2015-04-23	lycorn	NF	no factor from 2^64 to 2^65
2015-04-23	lycorn	NF	no factor from 2^63 to 2^64
2011-08-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-05-16	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2010-01-17	S485122	NF	no factor from 2^60 to 2^61