40 277 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
241663	6	17.9	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	653 / 4588

Estimated T-Level: 35.7 ⓘ

TF below 2^114 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	E714AB42297664D8	1	0	1	3
Verified	2017-10-13	kkmrkkblmbrbk	E714AB42297664D8	1	30611	1	3
Verified	2020-04-17	Oliver Kruse	8D6EC44C93FE0B99	1	30787	5	3
Verified	2021-03-22	_p95holder_	8D6EC44C93FE0B99	1	22025	5	3

History

Date	User	Type	Result
2023-04-05	JacobZ	NF-PM1	B1=900000000, B2=807307429628700
2021-12-19	Lisander Viaene	NF-PM1	B1=1100000000
2021-12-17	Lisander Viaene	NF-PM1	B1=1000000000
2021-05-07	ATH	NF-PP1	Start=2/7, B1=100000000, B2=10000000000
2021-03-22	_p95holder_	C-PRP	M40277/241663 : 8D6EC44C93FE0B99 PRP: Verified PRP without proof (small exponent)
2021-03-22	Conductor	F-ECM	Factor: 241663 / (ECM curve 1, B1=1000000, B2=100000000, Sigma=6251323525524917)
2020-04-17	Oliver Kruse	C-PRP	M40277/241663 : 8D6EC44C93FE0B99 PRP: Verified PRP without proof (small exponent)
2017-10-13	kkmrkkblmbrbk	C-PRP	M40277/241663 : E714AB42297664D8 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M40277/241663 : E714AB42297664D8 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M40277/241663 : E714AB42297664D8 PRP without proof (not generated)
2016-09-13	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12