1 862 957 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
965011727	9	29.8	old
893641355081341040833	21	69.6	2020-12-02 20:22:02
9037620597292984135799	22	72.9	2021-08-27 10:07:51
2165624752073048918885466559	28	90.8	2021-08-27 10:07:51

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)	2017-10-04	Oliver Kruse	96B94CF8CD213CF3	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	96B94CF8CD213CF3	1	1154486	1	3
Verified (Factored)	2020-12-03	Poao	83F7DD895D0C7380	2	1430389	5	3
Verified	2021-08-28	SRJ2877	83F7DD895D0C7380	4	1180200	5	3

History

Date	User	Type	Result
2021-08-28	curtisc	CERT	PRP Certification Proof certified good
2021-08-28	SRJ2877	C-PRP	M1862957/965011727/893641355081341040833/9037620597292984135799/2165624752073048918885466559 : 83F7DD895D0C7380 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-27	TJAOI	F-ECM	Factor: 2165624752073048918885466559 / (ECM curve 200, B1=50000, B2=6600000)
2021-08-27	TJAOI	F-ECM	Factor: 9037620597292984135799 / (ECM curve 12, B1=50000, B2=6600000)
2020-12-03	curtisc	CERT	PRP Certification Proof certified good
2020-12-03	Poao	C-PRP	M1862957/965011727/893641355081341040833 : 83F7DD895D0C7380 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-12-02	Poao	F-ECM	Factor: 893641355081341040833 / (ECM curve 6, B1=50000, B2=5000000, Sigma=5421983898687947)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1862957/965011727 : 96B94CF8CD213CF3 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1862957/965011727 : 96B94CF8CD213CF3 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12