537 781 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
134410846856739553389755321339818049561	39	126.7	2013-10-08 10:29:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	E31	0
Verified (Factored)		Charles F. Kerchner III	6DFFBF1B2F5E4E31	0
Verified (Factored)		Klaus Kastens	6DFFBF1B2F5E4E31	181833

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	388D1078D61FDDAF	1	0	1	3
Verified	2017-11-03	kkmrkkblmbrbk	388D1078D61FDDAF	1	404138	1	3
Unverified (Reliable)	2020-04-19	Oliver Kruse	06857120ADAD9A__	1	338832	5	3

P-1 factors

Date	Factor	B1	B2
2013-10-08	134410846856739553389755321339818049561	1215000	37665000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-08-04	ViliamF	NF-PM1	B1=10000000, B2=1060000000
2020-04-19	Oliver Kruse	C-PRP	M537781/134410846856739553389755321339818049561 : 06857120ADAD9A__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-03	kkmrkkblmbrbk	C-PRP	M537781/134410846856739553389755321339818049561 : 388D1078D61FDDAF PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M537781/134410846856739553389755321339818049561 : 388D1078D61FDDAF PRP: Unverified (Reliable) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12
2013-10-08	David Campeau	F-PM1	Factor: 134410846856739553389755321339818049561
2012-07-14	Joss	NF-PM1	B1=1075562
2012-03-20	c10ck3r	NF-PM1	B1=1000000
2011-07-26	Joss	NF-PM1	B1=742552
2011-06-26	Joss	NF-PM1	B1=445531
2011-06-12	Joss	NF-PM1	B1=400000