7 573 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
45439	5	15.5	old
66397756052521	14	45.9	old
363484895731261618033	21	68.3	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2050 / 9201

Estimated T-Level: 41.1 ⓘ

TF below 2^132 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	B484F6C23D94FCEF	3	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	B484F6C23D94FCEF	3	0	1	3
Verified	2017-12-07	ATH	B484F6C23D94FCEF	3	6552	1	3
Verified	2020-04-17	Oliver Kruse	68B4DA2A7154AE71	3	2418	5	3
Verified	2024-02-03	Wentao Huang	68B4DA2A7154AE71	3	4109	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M7573/45439/66397756052521/363484895731261618033 : 68B4DA2A7154AE71 PRP: Verified PRP without proof (small exponent)
2021-07-07	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-04-17	Oliver Kruse	C-PRP	M7573/45439/66397756052521/363484895731261618033 : 68B4DA2A7154AE71 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M7573/45439/66397756052521/363484895731261618033 : B484F6C23D94FCEF PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M7573/45439/66397756052521/363484895731261618033 : B484F6C23D94FCEF PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7573/known_factors : B484F6C23D94FCEF PRP without proof (not generated)