2 140 207 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
55621411681601	14	45.7	old
32156933058789331077343	23	74.8	2022-05-22 13:01:48

ECM

Digits	B1	Curves
25	50000	142 / 280

Estimated T-Level: 22.5 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	1CD894787C1E3CFF	1	0	1	3
Verified (Factored)	2017-11-18	kkmrkkblmbrbk	1CD894787C1E3CFF	1	132921	1	3
Verified	2022-05-28	XZT	6201F9D5144E9357	2	1525507	5	3

History

Date	User	Type	Result
2022-05-28	slandrum	CERT	PRP Certification Proof certified good
2022-05-28	XZT	C-PRP	M2140207/55621411681601/32156933058789331077343 : 6201F9D5144E9357 PRP proof power = 7 PRP: Verified Proof certified good
2022-05-22	debrouxl	F-ECM	Factor: 32156933058789331077343 / (ECM curve 3, B1=50000, B2=7150000, Sigma=4658477476147777)
2017-11-18	kkmrkkblmbrbk	C-PRP	M2140207/55621411681601 : 1CD894787C1E3CFF PRP: Verified (Factored) PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2140207/55621411681601 : 1CD894787C1E3CFF PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12