2 971 399 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
432772130725185688332957241	27	88.5	2023-04-09 23:25:30

ECM

Digits	B1	Curves
25	50000	125 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ray Strubinger	432E3F5117289D2B	0
Verified (Factored)	1999-06-15	Sam Robertson	432E3F5117289D2B	1004480
Verified (Factored)	2018-10-18	kkmrkkblmbrbk	432E3F5117289D2B	2865531

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-04-10	retsu	1E9372E0E15CE8FF	1	2272756	5	3
Verified	2023-04-11	retsu	1E9372E0E15CE8FF	1	509047	5	3

P-1 factors

Date	Factor	B1	B2
2023-04-09	432772130725185688332957241	1000000	906755850
2023-07-06	432772130725185688332957241	10000000	19544807100

History

Date	User	Type	Result
2023-07-06	mikr	F-PM1	Factor: 432772130725185688332957241 / (P-1, B1=10000000, B2=19544807100)
2023-04-11	retsu	C-PRP	M2971399/432772130725185688332957241 : 1E9372E0E15CE8FF PRP: Verified PRP without proof (not generated)
2023-04-10	retsu	C-PRP	M2971399/432772130725185688332957241 : 1E9372E0E15CE8FF PRP: Verified PRP without proof (not generated)
2023-04-09	Joss	F-PM1	Factor: 432772130725185688332957241 / (P-1, B1=1000000, B2=906755850)
2022-12-09	Joss	NF-PM1	B1=1000000, B2=284427990
2021-11-26	Aaron Haviland	NF-PM1	B1=1200000, B2=36000000, e=12
2021-05-17	TJAOI	NF	no factor from 2^68 to 2^69
2018-12-25	chuenkit	NF	no factor from 2^67 to 2^68
2018-10-18	kkmrkkblmbrbk	C-LL	432E3F5117289D2B
2017-12-03	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-28	ramgeis	NF	no factor from 2^65 to 2^66
2015-05-02	VictordeHollander	NF-PM1	B1=1000000, B2=20000000, E=12
2015-04-29	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-29	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-29	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-10-28	markr	NF-PM1	B1=95000, B2=1995000, E=6
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61