1 152 517 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
90247018872937573802926559	26	86.2	2014-07-29 20:17:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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	Shift
Verified (Factored)		David Slowinski	1369	0
Verified (Factored)		Larry Deem	0EBBFB03173A3369	0
Verified (Factored)	2002-07-14	S57483	0EBBFB03173A3369	1098996

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	55A8BCD4A2328048	1	0	1	3
Verified	2017-10-17	Oliver Kruse	55A8BCD4A2328048	1	761284	1	3
Verified	2018-01-02	ATH	55A8BCD4A2328048	1	805180	1	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-02	ATH	C-PRP	M1152517/90247018872937573802926559 : 55A8BCD4A2328048 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1152517/90247018872937573802926559 : 55A8BCD4A2328048 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1152517/90247018872937573802926559 : 55A8BCD4A2328048 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2014-07-29	Xyzzy	F-ECM	Factor: 90247018872937573802926559 / (ECM curve 1, B1=50000, B2=5000000)
2012-10-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-02	markr	NF-PM1	B1=500000, B2=10000000, E=12
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-15	Sturle Sunde	NF	no factor from 2^60 to 2^61