9 002 671 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
160912509458952521950925521	27	87.1	2018-03-01 09:07:07

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad		The Packett Family	39353FB91B3D14AC	0
Verified (Factored)		Steve Potocny	D0EF852FFDEBBA07	6786033
Verified (Factored)	2003-05-19	Ars Technica Team Prime Rib	D0EF852FFDEBBA07	92271

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-29	vnatin	955B43B054E5C798	1	4796400	5	3
Verified	2020-10-20	oodaira	955B43B054E5C798	1	5088821	5	3

P-1 factors

Date	Factor	B1	B2
2018-03-01	160912509458952521950925521	2500000	72000000

History

Date	User	Type	Result
2020-10-20	oodaira	C-PRP	M9002671/160912509458952521950925521 : 955B43B054E5C798 PRP: Verified PRP without proof (not generated)
2019-05-29	vnatin	C-PRP	M9002671/160912509458952521950925521 : 955B43B054E5C798 PRP: Verified PRP without proof (not generated)
2018-03-01	mikr	F-PM1	Factor: 160912509458952521950925521 / (P-1, B1=2500000, B2=72000000, E=12)
2016-12-17	snme2pm1	NF	no factor from 2^67 to 2^68
2016-03-16	snme2pm1	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^63 to 2^64
2015-05-12	VictordeHollander	NF	no factor from 2^65 to 2^66
2012-05-22	Squeeky_Squirrel	NF-PM1	B1=100000, B2=1675000, E=6
2009-12-09	Bud	NF	no factor from 2^64 to 2^65