1 963 751 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
2280386211241	13	41.1	old
237319355176663745521	21	67.7	2020-12-24 12:42:36

ECM

Digits	B1	Curves
25	50000	275 / 280

Estimated T-Level: 24.9 ⓘ

TF below 2^78 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	5F3861041F810FD2	1	0	1	3
Verified (Factored)	2017-11-11	ATH	5F3861041F810FD2	1	453936	1	3
Verified	2020-12-24	mrh	13460033EC4DA944	2	1316264	5	3

History

Date	User	Type	Result
2023-10-14	USAFSS	NF-PM1	B1=576000, B2=490908600
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2020-12-24	Ryan James Lind	CERT	PRP Certification Proof certified good
2020-12-24	mrh	C-PRP	M1963751/2280386211241/237319355176663745521 : 13460033EC4DA944 PRP proof power = 7 PRP: Verified Proof certified good
2020-12-24	_p95holder_	F-ECM	Factor: 237319355176663745521 / (ECM curve 7, B1=50000, B2=5000000)
2017-11-11	ATH	C-PRP	M1963751/2280386211241 : 5F3861041F810FD2 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1963751/2280386211241 : 5F3861041F810FD2 PRP: Verified (Factored) PRP without proof (not generated)