7 681 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
3994121	7	21.9	old
533935805041	12	39.0	old
1245367104346473863	19	60.1	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2047 / 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	F3382A59A39CC502	3	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	F3382A59A39CC502	3	0	1	3
Verified	2017-12-07	ATH	F3382A59A39CC502	3	1043	1	3
Verified	2020-04-17	Oliver Kruse	C369F510E9F93794	3	4299	5	3
Verified	2024-02-03	Wentao Huang	C369F510E9F93794	3	127	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M7681/3994121/533935805041/1245367104346473863 : C369F510E9F93794 PRP: Verified PRP without proof (small exponent)
2021-07-08	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-04-17	Oliver Kruse	C-PRP	M7681/3994121/533935805041/1245367104346473863 : C369F510E9F93794 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M7681/3994121/533935805041/1245367104346473863 : F3382A59A39CC502 PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M7681/3994121/533935805041/1245367104346473863 : F3382A59A39CC502 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7681/known_factors : F3382A59A39CC502 PRP without proof (not generated)