56 219 887 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁴

TF target 2⁷³

P-1

B1 =	565000
B2 =	12288750

Status	Date	User	Residue	Shift
Verified	2014-01-01	Geoff Wing	8A6F69BBAB5FD95A	37720800
Verified	2021-03-24	Sergey Nosov	8A6F69BBAB5FD95A	18371000

History

Date	User	Type	Result
2021-03-24	Sergey Nosov	C-LL	8A6F69BBAB5FD95A
2019-02-03	TheJudger	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^63
2016-01-22	-Anonymous-	NF	no factor from 2^72 to 2^73
2014-01-01	Geoff Wing	C-LL	8A6F69BBAB5FD95A
2012-08-05	TheJudger	NF-PM1	B1=565000, B2=12288750, E=12
2012-05-10	bcp19	NF	no factor from 2^71 to 2^72
2012-02-21	Kyle Askine	NF	no factor from 2^70 to 2^71
2011-06-10	Zet_kor	NF	no factor from 2^69 to 2^70
2011-04-18	ITS	NF	no factor from 2^68 to 2^69
2009-11-18	Sturle Sunde	NF	no factor from 2^67 to 2^68
2008-07-09	James Heinrich	NF	no factor from 2^66 to 2^67
2008-07-08	Sturle Sunde	NF	no factor from 2^65 to 2^66
2008-07-07	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-07-07	Sturle Sunde	NF	no factor from 2^63 to 2^64