42 654 757 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
236486695851916701794399	24	77.6	2021-02-11 15:58:42
1056984475594071874805555854159	31	99.7	2021-02-11 15:58:41

Status	Date	User	Residue	Shift
Verified (Factored)	2008-07-25	Michael Frank	FBB049CC93BBE2B1	16060157
Verified (Factored)	2017-04-08	-Anonymous-	FBB049CC93BBE2B1	41961561

P-1 factors

Date	Factor	B1	B2
2021-02-11	1056984475594071874805555854159	2000000	60000000
2021-02-11	236486695851916701794399	2000000	60000000

History

Date	User	Type	Result
2021-02-11	ViliamF	F-PM1	Factor: 249962766200012947561203808756653177525031174447055441 / (P-1, B1=2000000, B2=60000000)
2020-01-11	-Anonymous-	NF	no factor from 2^73 to 2^74
2019-10-04	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-04-08	-Anonymous-	C-LL	FBB049CC93BBE2B1
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
2014-05-01	Grant McCracken	NF	no factor from 2^69 to 2^70
2014-02-17	Grant McCracken	NF	no factor from 2^68 to 2^69