13 553 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
910219481	9	29.8	old
183120437897	12	37.4	2008-08-26 19:58:40

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1332 / 9201

Estimated T-Level: 40.7 ⓘ

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	C54D66ED75A9A303	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	C54D66ED75A9A303	2	12848	1	3
Unverified	2020-04-17	Oliver Kruse	AAF39C3DD40938__	2	1911	5	3

History

Date	User	Type	Result
2024-01-29	-Anonymous-	NF-PM1	B1=100000000000, B2=122154521813133810
2023-05-19	JacobZ	NF-PM1	B1=8100000000, B2=31521845619113850
2023-01-29	Lisander Viaene	NF-PM1	B1=10000000, B2=7131516351960
2023-01-29	Lisander Viaene	NF-PM1	B1=65000, B2=7131516351960
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2020-04-17	Oliver Kruse	C-PRP	M13553/910219481/183120437897 : AAF39C3DD40938__ PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M13553/910219481/183120437897 : C54D66ED75A9A303 PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13553/910219481/183120437897 : C54D66ED75A9A303 PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M13553/910219481/183120437897 : C54D66ED75A9A303 PRP without proof (not generated)
2008-08-26	-Anonymous-	F	Factor: 183120437897