1 487 599 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
159157161993616070026049	24	77.1	2015-10-31 00:24:50
580280428929208057899262359679	30	98.9	2019-05-10 12:39:18

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Walt Donovan	F2BA5D6A51F2BE66	0
Verified (Factored)	1998-12-21	Gary Untermeyer	F2BA5D6A51F2BE66	76658
Verified (Factored)	2015-07-19	MadPoo	F2BA5D6A51F2BE66	607838

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	912856A569C316B7	1	0	1	3
Verified (Factored)	2017-10-18	Oliver Kruse	912856A569C316B7	1	651854	1	3
Verified	2019-05-10	ATH	152F9733F3FE5C9C	2	1378522	5	3
Verified	2019-05-11	kkmrkkblmbrbk	152F9733F3FE5C9C	2	1318643	5	3

History

Date	User	Type	Result
2024-02-02	Anton Tsvetkov	NF-PM1	B1=5000000, B2=1004198580
2019-05-11	kkmrkkblmbrbk	C-PRP	M1487599/159157161993616070026049/580280428929208057899262359679 : 152F9733F3FE5C9C PRP: Verified PRP without proof (not generated)
2019-05-10	ATH	C-PRP	M1487599/159157161993616070026049/580280428929208057899262359679 : 152F9733F3FE5C9C PRP: Verified PRP without proof (not generated)
2019-05-10	TJAOI	F-ECM	Factor: 580280428929208057899262359679 / (ECM curve 194, B1=50000, B2=5000000)
2017-10-18	Oliver Kruse	C-PRP	M1487599/159157161993616070026049 : 912856A569C316B7 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1487599/159157161993616070026049 : 912856A569C316B7 PRP: Verified PRP without proof (not generated)
2015-10-31	Chang Chia-Tche	F-ECM	Factor: 159157161993616070026049 / (ECM curve 1, B1=50000, B2=5000000)
2015-09-24	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-19	MadPoo	C-LL	F2BA5D6A51F2BE66
2015-04-06	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-06	snme2pm1	NF	no factor from 2^63 to 2^64
2015-03-24	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2011-12-05	markr	NF-PM1	B1=275000, B2=6000000, E=12
2011-05-28	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-05-06	Architects Cubed	NF	no factor from 2^60 to 2^61