8 527 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
288883383479455197011146279	27	87.9	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	6927 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^151 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	ACCA56EF833623F3	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	ACCA56EF833623F3	1	374	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	55A9A8DEDA865363	1	3593	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	55A9A8DEDA865363	1	2041	5	3

History

Date	User	Type	Result
2025-05-10	masser	NF-PP1	Start=135/61, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M8527/288883383479455197011146279 : 55A9A8DEDA865363
2023-08-19	JacobZ	NF-PM1	B1=69000000000, B2=265422648792401100
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8527/288883383479455197011146279 : 55A9A8DEDA865363
2017-10-12	kkmrkkblmbrbk	C-PRP	M8527/288883383479455197011146279 : ACCA56EF833623F3
2017-09-21	Oliver Kruse	C-PRP	M8527/288883383479455197011146279 : ACCA56EF833623F3
2017-09-21	Oliver Kruse	C-PRP	M8527/288883383479455197011146279 : ACCA56EF833623F3