51 905 881 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 2⁷³

TF target 2⁷³

P-1

B1 =	610000
B2 =	16927500

Status	Date	User	Residue	Shift
Verified	2012-11-24	irreally9002	3C544716CAEC8C8C	44300199
Verified	2019-03-20	alex	3C544716CAEC8C8C	42294696

History

Date	User	Type	Result
2019-03-20	alex	C-LL	3C544716CAEC8C8C
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^63
2016-01-11	AirSquirrels	NF	no factor from 2^72 to 2^73
2012-11-24	irreally9002	C-LL	3C544716CAEC8C8C
2012-02-29	Serge Batalov	NF	no factor from 2^71 to 2^72
2012-02-28	Serge Batalov	NF	no factor from 2^70 to 2^71
2011-11-11	Bdot	NF	no factor from 2^69 to 2^70
2010-08-30	EPF	NF	no factor from 2^68 to 2^69
2010-05-11	ames_a	NF-PM1	B1=610000, B2=16927500
2010-04-21	KBoyd	NF	no factor from 2^67 to 2^68
2009-10-08	riccardo.brasca	NF	no factor from 2^66 to 2^67
2009-06-04	Sturle Sunde	NF	no factor from 2^65 to 2^66
2009-04-03	-Anonymous-	NF	no factor from 2^64 to 2^65
2009-04-03	-Anonymous-	NF	no factor from 2^63 to 2^64