13 151 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
11783297	8	23.5	old
503485450629580813860473512721	30	98.7	2009-08-09 23:07:53

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1385 / 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	764D988540B1DC4A	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	764D988540B1DC4A	2	10359	1	3
Unverified	2020-04-17	Oliver Kruse	7C9693F63D43DE__	2	8355	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	M13151/11783297/503485450629580813860473512721 : 7C9693F63D43DE__ PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M13151/11783297/503485450629580813860473512721 : 764D988540B1DC4A PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13151/11783297/503485450629580813860473512721 : 764D988540B1DC4A PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13151/11783297/503485450629580813860473512721 : 764D988540B1DC4A PRP without proof (not generated)
2009-08-09	Rob_Dee	F-ECM	Factor: 503485450629580813860473512721