7 187 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
48871601	8	25.5	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	3053 / 16550

Estimated T-Level: 45.9 ⓘ

TF below 2^148 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	8F188D9F52D51045	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	8F188D9F52D51045	1	3664	1	3
Verified	2020-04-17	Oliver Kruse	EF183A90DF342005	1	1945	5	3
Verified	2024-02-03	Wentao Huang	EF183A90DF342005	1	1569	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M7187/48871601 : EF183A90DF342005 PRP: Verified PRP without proof (small exponent)
2023-02-17	Denial140	NF-PM1	B1=10000000000, B2=2850622481957250
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M7187/48871601 : EF183A90DF342005 PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M7187/48871601 : 8F188D9F52D51045 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7187/48871601 : 8F188D9F52D51045 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7187/48871601 : 8F188D9F52D51045 PRP without proof (not generated)