15 194 393 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
8644999853160379335271	22	72.9	2023-04-14 05:44:45
52890099427450630635527	23	75.5	2023-11-05 00:49:04

ECM

Digits	B1	Curves
25	50000	14 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2002-09-22	Bourit Cyril	9AFFF02192A39A69	7955182
Verified (Factored)	2005-09-22	Marc Getty / Phil Fizur	9AFFF02192A39A69	3374764

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2023-06-29	prime23	34E58F3A35D92A7A	1	14125581	5	3
Verified	2023-11-12	JacobZ	34E58F3A35D92A7A	2	367607	5	3

P-1 factors

Date	Factor	B1	B2
2023-11-05	52890099427450630635527	480000	449768550

History

Date	User	Type	Result
2023-11-12	slandrum	CERT	PRP Certification Proof certified good
2023-11-12	JacobZ	C-PRP	M15194393/8644999853160379335271/52890099427450630635527 : 34E58F3A35D92A7A PRP proof power = 8 PRP: Verified Proof certified good
2023-11-05	nordi	F-PM1	Factor: 52890099427450630635527 / (P-1, B1=480000, B2=449768550)
2023-10-22	nordi	NF-PM1	B1=480000
2023-06-29	Eric Adams	CERT	PRP Certification Proof certified good
2023-06-29	prime23	C-PRP	M15194393/8644999853160379335271 : 34E58F3A35D92A7A PRP proof power = 8 PRP: Verified (Factored) Proof certified good
2023-04-14	ATH	F-PP1	Start=2/7, B1=1000000, B2=29000000, Factor: 8644999853160379335271
2021-10-15	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-06	SRBase	NF	no factor from 2^70 to 2^71
2021-07-06	lycorn	NF	no factor from 2^69 to 2^70
2017-10-11	ramgeis	NF	no factor from 2^68 to 2^69
2016-11-03	mikr	NF	no factor from 2^67 to 2^68
2014-05-14	Nesowa	NF	no factor from 2^66 to 2^67
2014-05-14	Nesowa	NF	no factor from 2^65 to 2^66