42 650 347 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
15355952002399528816936779410765077751	38	123.5	2021-03-26 21:34:31

Status	Date	User	Residue	Shift
Verified (Factored)	2010-02-22	stephenson	132C54C55BBAD023	27382980
Verified (Factored)	2018-01-28	Rainchill	132C54C55BBAD023	10236470

P-1 factors

Date	Factor	B1	B2
2021-03-26	15355952002399528816936779410765077751	1500000	45000000

History

Date	User	Type	Result
2021-03-26	Sid & Andy	F-PM1	Factor: 15355952002399528816936779410765077751 / (P-1, B1=1500000, B2=45000000)
2020-01-17	-Anonymous-	NF	no factor from 2^73 to 2^74
2019-10-06	-Anonymous-	NF	no factor from 2^72 to 2^73
2018-01-28	Rainchill	C-LL	132C54C55BBAD023
2015-08-31	-Anonymous-	NF	no factor from 2^71 to 2^72
2015-04-05	Mark Rose	NF	no factor from 2^70 to 2^71
2014-04-13	Grant McCracken	NF	no factor from 2^69 to 2^70
2014-01-03	LaurV	NF	no factor from 2^68 to 2^69
2010-02-22	stephenson	C-LL	132C54C55BBAD023
2009-03-20	-Anonymous-	NF-PM1	B1=490000, B2=8575000