5 418 037 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
299958090483254119938449	24	78.0	2021-06-09 21:06:16

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1999-02-14	Marc Getty / Phil Fizur	BB86BA7E73266317	0
Verified (Factored)	2000-09-23	Eric Hayward	BB86BA7E73266317	3646293

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-12	Klaus Nordmann	626805F0C2AD0EEF	1	4235040	5	3

P-1 factors

Date	Factor	B1	B2
2021-06-09	299958090483254119938449	1200000	85200000

History

Date	User	Type	Result
2021-06-12	Ben Delo	CERT	PRP Certification Proof certified good
2021-06-12	Klaus Nordmann	C-PRP	M5418037/299958090483254119938449 : 626805F0C2AD0EEF PRP proof power = 7 PRP: Verified Proof certified good
2021-06-09	Dylan Delgado	F-PM1	Factor: 299958090483254119938449 / (P-1, B1=1200000, B2=85200000)
2020-09-14	TJAOI	NF	no factor from 2^68 to 2^69
2019-12-14	King	NF-PM1	B1=1000000, B2=22500000, E=12
2018-06-29	ramgeis	NF	no factor from 2^67 to 2^68
2016-06-18	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-08-21	snme2pm1	NF	no factor from 2^65 to 2^66
2014-12-31	monst	NF	no factor from 2^64 to 2^65
2014-12-30	Nesowa	NF	no factor from 2^63 to 2^64
2009-05-14	GrunwalderGIMP	NF	no factor from 2^62 to 2^63