12 329 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
5104207	7	22.3	old
1394929309427321	16	50.3	2008-08-29 02:24:30

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1446 / 9201

Estimated T-Level: 40.8 ⓘ

TF below 2^130 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	281AAFC9226E9992	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	281AAFC9226E9992	2	12269	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	3638AE1C836AADC2	2	7598	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	3638AE1C836AADC2	2	7174	5	3

History

Date	User	Type	Result
2025-03-06	masser	NF-PP1	Start=180/31, B1=430000000, B2=429570000000
2025-02-24	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-19	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M12329/1394929309427321/5104207 : 3638AE1C836AADC2
2023-04-06	-anonymous-	NF-PM1	B1=100000000000, B2=120417199046794650
2020-04-17	Oliver Kruse	C-PRP	M12329/5104207/1394929309427321 : 3638AE1C836AADC2
2017-10-12	kkmrkkblmbrbk	C-PRP	M12329/5104207/1394929309427321 : 281AAFC9226E9992
2017-09-21	Oliver Kruse	C-PRP	M12329/5104207/1394929309427321 : 281AAFC9226E9992
2017-09-21	Oliver Kruse	C-PRP	M12329/5104207/1394929309427321 : 281AAFC9226E9992
2016-09-09	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2008-08-29	-anonymous-	F	Factor: 1394929309427321