39 038 309 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 2⁷²

P-1

B1 =	205000
B2 =	3997500

Status	Date	User	Residue	Shift
Verified	2009-04-04	curtisc	7A4057C44B6449AA	33672574
Verified	2016-10-19	Michael Duggan	7A4057C44B6449AA	30841540

History

Date	User	Type	Result
2019-10-12	-Anonymous-	NF	no factor from 2^72 to 2^73
2019-05-14	monst	NF	no factor from 2^71 to 2^72
2016-10-19	Michael Duggan	C-LL	7A4057C44B6449AA
2014-11-30	srow7	NF	no factor from 2^70 to 2^71
2014-11-23	NR	NF	no factor from 2^69 to 2^70
2010-08-02	Carsten Kossendey	NF-PM1	B1=205000, B2=3997500, E=6
2009-04-04	curtisc	C-LL	7A4057C44B6449AA