9 049 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
28721527	8	24.8	old
28938703	8	24.8	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	7018 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^152 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	E31646F5D884DCE3	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	E31646F5D884DCE3	2	4898	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	8D9454FE39B35DD9	2	3661	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	8D9454FE39B35DD9	2	7526	5	3

History

Date	User	Type	Result
2025-04-21	masser	NF-PP1	Start=197/31, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9049/28721527/28938703 : 8D9454FE39B35DD9
2023-07-18	JacobZ	NF-PM1	B1=64000000000, B2=263527252205367150
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M9049/28721527/28938703 : 8D9454FE39B35DD9
2017-10-12	kkmrkkblmbrbk	C-PRP	M9049/28721527/28938703 : E31646F5D884DCE3
2017-09-21	Oliver Kruse	C-PRP	M9049/28721527/28938703 : E31646F5D884DCE3
2017-09-21	Oliver Kruse	C-PRP	M9049/28721527/28938703 : E31646F5D884DCE3