5 311 363 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
3111551432066386473191617754317535153	37	121.2	2019-05-31 22:29:35

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)		Henrik Flodell	03E2B613FFE17DEC	0
Verified (Factored)	2000-09-29	Stephen Wood	03E2B613FFE17DEC	4293771

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-06-01	artorollo	A432B651409995FA	1	816685	5	3
Verified	2019-06-02	marssystems	A432B651409995FA	1	3135624	5	3

P-1 factors

Date	Factor	B1	B2
2019-05-31	3111551432066386473191617754317535153	1000000	22500000

History

Date	User	Type	Result
2019-06-02	marssystems	C-PRP	M5311363/3111551432066386473191617754317535153 : A432B651409995FA PRP: Verified PRP without proof (not generated)
2019-06-01	artorollo	C-PRP	M5311363/3111551432066386473191617754317535153 : A432B651409995FA PRP: Verified PRP without proof (not generated)
2019-05-31	King	F-PM1	Factor: 3111551432066386473191617754317535153 / (P-1, B1=1000000, B2=22500000, E=6)
2018-06-19	ramgeis	NF	no factor from 2^67 to 2^68
2016-07-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-08-16	snme2pm1	NF	no factor from 2^65 to 2^66
2014-12-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2014-12-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2009-11-14	USAFSS	NF-PM1	B1=60000, B2=990000, E=6
2009-05-30	GrunwalderGIMP	NF	no factor from 2^62 to 2^63