7 143 767 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
150993894566297062039	21	67.0	2018-07-24 09:46:40

ECM

Digits	B1	Curves
25	50000	6 / 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)	1999-05-30	Nathan Stohs	DBB0394D0E37BDA9	6126751
Verified (Factored)	2002-09-29	John Dierdorf	DBB0394D0E37BDA9	1394075

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-27	_p95holder_	0E54011E060F3E7F	1	6271647	5	3
Verified	2019-03-25	kkmrkkblmbrbk	0E54011E060F3E7F	1	531412	5	3

History

Date	User	Type	Result
2025-02-01	Stef42	NF-PM1	B1=2860000, B2=5324473770
2019-03-25	kkmrkkblmbrbk	C-PRP	M7143767/150993894566297062039 : 0E54011E060F3E7F PRP: Verified PRP without proof (not generated)
2018-07-27	_p95holder_	C-PRP	M7143767/150993894566297062039 : 0E54011E060F3E7F PRP: Verified PRP without proof (not generated)
2018-07-24	ramgeis	F	Factor: 150993894566297062039 / TF: 67-68*
2016-10-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-21	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-02-06	lycorn	NF	no factor from 2^64 to 2^65
2014-02-02	Nesowa	NF	no factor from 2^63 to 2^64