62 693 353 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷⁴

TF target 2⁷⁴

P-1

B1 =	560000
B2 =	11200000

Status	Date	User	Residue	Shift
Verified	2013-09-01	Amazon EC2	C280FD2AF8F27E27	31806242
Verified	2022-10-14	lajo321	C280FD2AF8F27E27	4940664

History

Date	User	Type	Result
2022-10-14	lajo321	C-LL	C280FD2AF8F27E27
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^63
2013-09-01	Amazon EC2	C-LL	C280FD2AF8F27E27
2013-07-22	Jerry Hallett	NF-PM1	B1=560000, B2=11200000, E=12
2013-07-20	Chuck	NF	no factor from 2^73 to 2^74
2013-03-28	Tom Duell	NF	no factor from 2^72 to 2^73
2013-03-28	Tom Duell	NF	no factor from 2^71 to 2^72
2012-10-29	Juergen Kampmeier	NF	no factor from 2^70 to 2^71
2011-12-19	-Anonymous-	NF	no factor from 2^69 to 2^70
2009-10-23	Nicodemus Hallin	NF	no factor from 2^68 to 2^69
2009-10-20	-Anonymous-	NF	no factor from 2^67 to 2^68
2009-10-20	Sturle Sunde	NF	no factor from 2^66 to 2^67
2009-10-18	-Anonymous-	NF	no factor from 2^65 to 2^66
2009-08-13	-Anonymous-	NF	no factor from 2^64 to 2^65
2009-01-31	Wojciech Florek	NF	no factor from 2^63 to 2^64