1 952 689 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
874804673	9	29.7	old
2047297067928086582519	22	70.8	2020-11-24 09:25:01

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

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	FD017CDA306BAA54	1	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	FD017CDA306BAA54	1	1853387	1	3
Verified	2020-11-24	mrh	59CE69BA37F3D648	2	1073303	5	3

History

Date	User	Type	Result
2020-11-24	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-24	mrh	C-PRP	M1952689/874804673/2047297067928086582519 : 59CE69BA37F3D648 PRP proof power = 7 PRP: Verified Proof certified good
2020-11-24	MarkS	F-ECM	Factor: 2047297067928086582519 / (ECM curve 1, B1=50000, B2=5000000, Sigma=4015978728564854)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1952689/874804673 : FD017CDA306BAA54 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1952689/874804673 : FD017CDA306BAA54 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12