2 018 957 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
897640395943	12	39.7	old
564527852112030719551	21	68.9	2021-05-13 20:31:16

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	126 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	2E39D542D2547D9B	1	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	2E39D542D2547D9B	1	1397864	1	3
Verified	2021-05-15	kutens	50D90D61DEA43F96	2	1748648	5	3

History

Date	User	Type	Result
2021-05-15	Simon Josefsson	CERT	PRP Certification Proof certified good
2021-05-15	kutens	C-PRP	M2018957/897640395943/564527852112030719551 : 50D90D61DEA43F96 PRP proof power = 7 PRP: Verified Proof certified good
2021-05-13	_p95holder_	F-ECM	Factor: 564527852112030719551 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2018957/897640395943 : 2E39D542D2547D9B PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2018957/897640395943 : 2E39D542D2547D9B PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12