61 583 257 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 2⁷⁴

P-1

B1 =	585000
B2 =	11846250

Status	Date	User	Residue	Shift
Verified	2013-08-03	curtisc	530BEEF9DFC08FB5	47615422
Verified	2021-08-25	Smok_bmv	530BEEF9DFC08FB5	21578861

History

Date	User	Type	Result
2021-08-25	Smok_bmv	C-LL	530BEEF9DFC08FB5
2016-02-28	Judge Hale	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2013-08-03	curtisc	C-LL	530BEEF9DFC08FB5
2013-02-28	Jerry Hallett	NF-PM1	B1=585000, B2=11846250, E=6
2013-02-25	Kyle Askine	NF	no factor from 2^72 to 2^73
2013-02-25	Kyle Askine	NF	no factor from 2^71 to 2^72
2012-08-29	-Anonymous-	NF	no factor from 2^70 to 2^71
2011-11-18	eon_blue_apocalypse	NF	no factor from 2^69 to 2^70
2009-09-27	Son Johan	NF	no factor from 2^68 to 2^69
2009-02-27	Gymnasium_Raubling	NF	no factor from 2^67 to 2^68
2009-02-24	Kamil Kosinski	NF	no factor from 2^66 to 2^67
2009-02-15	Kamil Kosinski	NF	no factor from 2^65 to 2^66
2009-02-10	Lars Fricke	NF	no factor from 2^64 to 2^65
2009-02-04	jfarek	NF	no factor from 2^63 to 2^64