499 897 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
69856256307721180168930453543	29	95.8	2022-12-17 15:00:44

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	474 / 640

Estimated T-Level: 28.7 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Mischa Kenn	EE4BB3A010161991	0
Verified (Factored)		Peter Marksteiner	EE4BB3A010161991	0
Verified (Factored)		Eivind Triel	EE4BB3A010161991	264597
Verified (Factored)		Brian J. Beesley	EE4BB3A010161991	398640

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-12-17	masser	7D020482ABCEE914	1	137423	5	3

History

Date	User	Type	Result
2022-12-17	masser	NF-PP1	Start=2/7, B1=16000000, B2=496000000
2022-12-17	XTitan21	CERT	PRP Certification Proof certified good
2022-12-17	masser	C-PRP	M499897/69856256307721180168930453543 : 7D020482ABCEE914 PRP proof power = 6 PRP: Verified Proof certified good
2022-12-17	masser	F-PP1	Start=6/5, B1=8000000, Factor: 69856256307721180168930453543
2022-12-11	masser	NF-PP1	Start=84/31, B1=4000000, B2=96000000
2022-11-21	Joss	NF-PM1	B1=1000000, B2=24980005050
2022-05-20	Gordon Spence	NF	no factor from 2^67 to 2^68
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-08-11	Yxinity	NF	no factor from 2^66 to 2^67
2018-06-14	BloodERazor	NF	no factor from 2^65 to 2^66
2017-11-30	BloodERazor	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-06	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-06	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-06-22	snme2pm1	NF	no factor from 2^61 to 2^62
2012-07-04	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-07-31	Sid & Andy	NF	no factor from 2^60 to 2^61
2010-12-23	Rob_Dee	NF-PM1	B1=1000000, B2=2000000, E=6
2010-12-22	Rob_Dee	NF-PM1	B1=500000, B2=1000000