7 964 023 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
153589245692153622257	21	67.1	2018-07-24 09:47:44

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
Verified (Factored)	2000-05-05	Jeff Panza	01C88D5346EBA12C	3021596
Verified (Factored)	2002-08-17	Rick Cummings	01C88D5346EBA12C	4412454

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-25	_p95holder_	E0ED4BA0DB208563	1	136693	5	3
Verified	2019-12-11	marssystems	E0ED4BA0DB208563	1	5391724	5	3

History

Date	User	Type	Result
2019-12-11	marssystems	C-PRP	M7964023/153589245692153622257 : E0ED4BA0DB208563 PRP: Verified PRP without proof (not generated)
2018-07-25	_p95holder_	C-PRP	M7964023/153589245692153622257 : E0ED4BA0DB208563 PRP: Verified PRP without proof (not generated)
2018-07-24	ramgeis	F	Factor: 153589245692153622257 / TF: 67-68*
2016-08-20	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-03	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-12-22	David Campeau	NF	no factor from 2^64 to 2^65
2013-10-02	Nesowa	NF	no factor from 2^63 to 2^64
2012-08-22	Squeeky_Squirrel	NF-PM1	B1=100000, B2=1925000, E=6