1 884 577 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
19881922190591327	17	54.1	old
162443525152210399185503	24	77.1	2020-09-07 22:35:45

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	17D331647A8682D5	1	0	1	3
Verified (Factored)	2017-11-08	ATH	17D331647A8682D5	1	1222833	1	3
Verified	2020-09-08	atrench	E8B7EA529E136F8F	2	267560	5	3
Verified	2020-11-11	Oliver Kruse	E8B7EA529E136F8F	2	1206590	5	3

History

Date	User	Type	Result
2020-11-11	curtisc	CERT	PRP Certification Proof certified good
2020-11-11	Oliver Kruse	C-PRP	M1884577/19881922190591327/162443525152210399185503 : E8B7EA529E136F8F PRP proof power = 7 PRP: Verified Proof certified good
2020-09-08	atrench	C-PRP	M1884577/19881922190591327/162443525152210399185503 : E8B7EA529E136F8F PRP: Verified PRP without proof (not generated)
2020-09-07	_p95holder_	F-ECM	Factor: 162443525152210399185503 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-08	ATH	C-PRP	M1884577/19881922190591327 : 17D331647A8682D5 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1884577/19881922190591327 : 17D331647A8682D5 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12