13 127 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
2835433	7	21.4	old
1406215973323223	16	50.3	2008-08-29 02:24:32

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1386 / 9201

Estimated T-Level: 40.8 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	46D969CDB109E75F	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	46D969CDB109E75F	2	5572	1	3
Unverified	2020-04-17	Oliver Kruse	8756B5E571D929__	2	6618	5	3

History

Date	User	Type	Result
2023-10-10	-Anonymous-	NF-PM1	B1=100000000000, B2=122154521813133810
2023-05-17	JacobZ	NF-PM1	B1=8400000000, B2=34523926202766000
2022-02-05	Joss	NF-PM1	B1=1000000, B2=3910366209750
2020-04-17	Oliver Kruse	C-PRP	M13127/2835433/1406215973323223 : 8756B5E571D929__ PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M13127/2835433/1406215973323223 : 46D969CDB109E75F PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13127/2835433/1406215973323223 : 46D969CDB109E75F PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13127/2835433/1406215973323223 : 46D969CDB109E75F PRP without proof (not generated)
2008-08-29	-Anonymous-	F	Factor: 1406215973323223