61 586 951 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	600000
B2 =	12000000

Status	Date	User	Residue	Shift
Verified	2014-08-08	Joyful	BA8FA29EEB1C489F	1715278
Verified	2022-05-21	Andrew_and	BA8FA29EEB1C489F	33426376

History

Date	User	Type	Result
2022-05-21	Andrew_and	C-LL	BA8FA29EEB1C489F
2021-01-04	Lisander Viaene	NF	no factor from 2^74 to 2^75
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2014-08-08	Joyful	C-LL	BA8FA29EEB1C489F
2014-07-14	chalsall	NF	no factor from 2^73 to 2^74
2013-04-30	Greg	NF-PM1	B1=600000, B2=12000000, e=6
2013-02-11	Bdot	NF	no factor from 2^72 to 2^73
2013-02-11	Bdot	NF	no factor from 2^71 to 2^72
2012-11-07	tmorrow	NF	no factor from 2^70 to 2^71
2011-11-18	-Anonymous-	NF	no factor from 2^69 to 2^70
2009-07-24	unconnected	NF	no factor from 2^68 to 2^69
2009-07-23	Gnorfe	NF	no factor from 2^67 to 2^68
2009-04-12	-Anonymous-	NF	no factor from 2^66 to 2^67
2009-04-07	-Anonymous-	NF	no factor from 2^65 to 2^66
2009-04-05	WorknPlay	NF	no factor from 2^64 to 2^65
2009-04-04	WorknPlay	NF	no factor from 2^63 to 2^64