1 988 797 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
570239808623	12	39.1	old
2130957931673641638401	22	70.9	2022-02-01 11:08:29

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	59 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 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	7F26AE4C1F13A407	1	0	1	3
Verified (Factored)	2017-11-12	ATH	7F26AE4C1F13A407	1	1898716	1	3
Verified	2022-02-03	_p95holder_	08E1EF849C7537A4	2	1703247	5	3
Verified	2022-02-07	RichD0	08E1EF849C7537A4	2	1652021	5	3

History

Date	User	Type	Result
2022-08-14	USAFSS	NF-PM1	B1=132000, B2=134381520
2022-02-07	AxelFox	CERT	PRP Certification Proof certified good
2022-02-07	RichD0	C-PRP	M1988797/570239808623/2130957931673641638401 : 08E1EF849C7537A4 PRP proof power = 7 PRP: Verified Proof certified good
2022-02-03	_p95holder_	C-PRP	M1988797/570239808623/2130957931673641638401 : 08E1EF849C7537A4 PRP: Verified PRP without proof (not generated)
2022-02-01	_p95holder_	F-ECM	Factor: 2130957931673641638401 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-12	ATH	C-PRP	M1988797/570239808623 : 7F26AE4C1F13A407 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1988797/570239808623 : 7F26AE4C1F13A407 PRP: Verified PRP without proof (not generated)