3 752 219 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
7504439	7	22.8	old
157593199	9	27.2	2008-09-07 21:11:50
397797769336266953473	21	68.4	2022-05-24 23:55:56

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	6566D97F5CD17F0A	2	0	1	3
Verified (Factored)	2017-12-04	Oliver Kruse	6566D97F5CD17F0A	2	1821194	1	3
Verified	2022-05-31	XZT	1762D425654ABB3B	3	2547963	5	3

P-1 factors

Date	Factor	B1	B2
2022-05-24	397797769336266953473	200000	130364850

History

Date	User	Type	Result
2022-06-01	curtisc	CERT	PRP Certification Proof certified good
2022-05-31	XZT	C-PRP	M3752219/7504439/157593199/397797769336266953473 : 1762D425654ABB3B PRP proof power = 7 PRP: Verified Proof certified good
2022-05-24	Joss	F-PM1	Factor: 397797769336266953473 / (P-1, B1=200000, B2=130364850)
2022-04-16	Joss	NF-PM1	B1=200000
2017-12-04	Oliver Kruse	C-PRP	M3752219/7504439/157593199 : 6566D97F5CD17F0A PRP: Verified (Factored) PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3752219/157593199/7504439 : 6566D97F5CD17F0A PRP: Verified (Factored) PRP without proof (not generated)
2008-09-07	Will Edgington	F	Factor: 157593199