287 597 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
4026359	7	21.9	old
4052571314971193567996903	25	81.7	2022-05-16 02:34:41

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	345 / 640

Estimated T-Level: 27.7 ⓘ

TF below 2^87 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-24	Oliver Kruse	9B8AC05E7D91B437	1	0	1	3
Verified (Factored)	2017-10-12	Oliver Kruse	9B8AC05E7D91B437	1	65227	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	9B8AC05E7D91B437	1	224509	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	78461B315570CB0D	1	193839	5	3
Verified	2022-05-16	aperson1	78461B315570CB0D	2	52741	5	3

History

Date	User	Type	Result
2023-02-17	USAFSS	NF-PM1	B1=4000000, B2=19304250420
2022-05-16	ANONYMOUS	CERT	PRP Certification Proof certified good
2022-05-16	aperson1	C-PRP	M287597/4026359/4052571314971193567996903 : 78461B315570CB0D PRP proof power = 5 PRP: Verified Proof certified good
2022-05-16	debrouxl	F-ECM	Factor: 4052571314971193567996903 / (ECM curve 1, B1=250000, B2=36750000, Sigma=152189349540654)
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2020-04-17	Oliver Kruse	C-PRP	M287597/4026359 : 78461B315570CB0D PRP: Verified (Factored) PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M287597/4026359 : 9B8AC05E7D91B437 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M287597/4026359 : 9B8AC05E7D91B437 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-24	Oliver Kruse	C-PRP	M287597/4026359 : 9B8AC05E7D91B437 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M287597/4026359 : 9B8AC05E7D91B437 PRP without proof (not generated)