9 271 061 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
47149158130171637374007	23	75.3	2014-06-20 22:33:31

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2000-03-08	michael boeker	94E939CA74F44C98	8813905
Verified (Factored)	2003-08-08	Giovambattista Cicioni	94E939CA74F44C98	2994978

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-08-18	Cornell Library	E2CEDE90F18E1EF0	1	4921145	5	3
Verified	2020-11-08	oodaira	E2CEDE90F18E1EF0	1	1034067	5	3

History

Date	User	Type	Result
2020-11-08	curtisc	CERT	PRP Certification Proof certified good
2020-11-08	oodaira	C-PRP	M9271061/47149158130171637374007 : E2CEDE90F18E1EF0 PRP proof power = 8 PRP: Verified Proof certified good
2019-08-18	Cornell Library	C-PRP	M9271061/47149158130171637374007 : E2CEDE90F18E1EF0 PRP: Verified PRP without proof (not generated)
2014-06-20	swildner	F-ECM	Factor: 47149158130171637374007 / (ECM curve 1, B1=50000, B2=5000000)
2013-09-07	Nesowa	NF	no factor from 2^64 to 2^65
2012-06-30	firejuggler	NF-PM1	B1=110000, B2=2035000, E=6