56 838 473 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 2⁷⁶

TF target 2⁷³

P-1

B1 =	670000
B2 =	17420000

Status	Date	User	Residue	Shift
Bad	2013-06-21	-Anonymous-	5064EA30F17BC3E8	55509873
Verified	2015-02-13	Scott Hemphill	30E74813B0774B53	28474831
Verified	2016-09-25	AirSquirrels	30E74813B0774B53	50278815

History

Date	User	Type	Result
2020-11-07	-Anonymous-	NF	no factor from 2^75 to 2^76
2020-10-17	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-09-25	AirSquirrels	C-LL	30E74813B0774B53
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^63
2015-02-13	Scott Hemphill	C-LL	30E74813B0774B53
2014-10-13	LaurV	NF	no factor from 2^73 to 2^74
2014-02-15	Bdot	NF	no factor from 2^72 to 2^73
2013-06-21	-Anonymous-	C-LL	5064EA30F17BC3E8
2011-11-11	Xyzzy	NF	no factor from 2^71 to 2^72
2011-11-06	Xyzzy	NF	no factor from 2^70 to 2^71
2011-10-23	-Anonymous-	NF	no factor from 2^69 to 2^70
2011-10-02	eon_blue_apocalypse	NF	no factor from 2^68 to 2^69
2011-09-26	ixfd64	NF-PM1	B1=670000, B2=17420000
2010-02-19	Pi_Rho	NF	no factor from 2^67 to 2^68
2008-08-20	Team_Inspector	NF	no factor from 2^66 to 2^67
2008-08-17	James Heinrich	NF	no factor from 2^65 to 2^66
2008-08-16	Sturle Sunde	NF	no factor from 2^64 to 2^65
2008-08-16	Sturle Sunde	NF	no factor from 2^63 to 2^64