1 786 271 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
117893887	9	26.8	old
10235332831	11	33.3	2008-07-15 07:46:36
19693570114627063	17	54.1	2014-11-05 12:06:30
159568915180724164779193	24	77.1	2020-06-01 15:53:52

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-01	alpertron	A14C9BC2B8A99BF0	3	0	1	3
Verified (Factored)	2017-10-19	Oliver Kruse	A14C9BC2B8A99BF0	3	1571294	1	3
Verified	2020-06-02	Klaus Nordmann	FD4957BF49F28491	4	459731	5	3
Verified	2020-06-02	oodaira	FD4957BF49F28491	4	1436685	5	3

History

Date	User	Type	Result
2020-06-02	oodaira	C-PRP	M1786271/117893887/10235332831/19693570114627063/159568915180724164779193 : FD4957BF49F28491 PRP: Verified PRP without proof (not generated)
2020-06-02	Klaus Nordmann	C-PRP	M1786271/117893887/10235332831/19693570114627063/159568915180724164779193 : FD4957BF49F28491 PRP: Verified PRP without proof (not generated)
2020-06-01	nordi	F-ECM	Factor: 159568915180724164779193 / (ECM curve 41, B1=50000, B2=5000000, Sigma=4464118520648955)
2017-10-19	Oliver Kruse	C-PRP	M1786271/117893887/10235332831/19693570114627063 : A14C9BC2B8A99BF0 PRP: Verified PRP without proof (not generated)
2017-10-01	alpertron	C-PRP	M1786271/117893887/10235332831/19693570114627063 : A14C9BC2B8A99BF0 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-11-05	TJAOI	F	Factor: 19693570114627063 / TF: 54-55
2008-07-15	J Feitsma	F	Factor: 10235332831