438 953 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
52674361	8	25.7	old
119395217	9	26.8	2008-07-21 09:19:17
1283543345207	13	40.2	2008-07-21 09:19:17
3654876232999156466673443214070391	34	111.5	2018-06-08 13:17:49

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-24	Oliver Kruse	BDD1A7C13D0ECB1C	3	0	1	3
Verified (Factored)	2017-09-24	Oliver Kruse	BDD1A7C13D0ECB1C	3	0	1	3
Verified (Factored)	2017-11-09	kkmrkkblmbrbk	BDD1A7C13D0ECB1C	3	124901	1	3
Verified	2018-06-09	Daniil Tsarkov	BA5C7C4B202EDF53	4	332017	5	3
Verified	2018-06-14	_p95holder_	BA5C7C4B202EDF53	4	320394	5	3

History

Date	User	Type	Result
2018-06-14	_p95holder_	C-PRP	M438953/52674361/119395217/1283543345207/3654876232999156466673443214070391 : BA5C7C4B202EDF53 PRP: Verified PRP without proof (small exponent)
2018-06-09	Daniil Tsarkov	C-PRP	M438953/52674361/119395217/1283543345207/3654876232999156466673443214070391 : BA5C7C4B202EDF53 PRP: Verified PRP without proof (small exponent)
2018-06-08	TJAOI	F-ECM	Factor: 3654876232999156466673443214070391 / (ECM curve 19, B1=250000, B2=25000000)
2017-11-09	kkmrkkblmbrbk	C-PRP	M438953/52674361/119395217/1283543345207 : BDD1A7C13D0ECB1C PRP: Verified PRP without proof (small exponent)
2017-09-24	Oliver Kruse	C-PRP	M438953/52674361/119395217/1283543345207 : BDD1A7C13D0ECB1C PRP: Verified PRP without proof (not generated)
2017-09-24	Oliver Kruse	C-PRP	M438953/52674361/119395217/1283543345207 : BDD1A7C13D0ECB1C PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=3000000, B2=100000000, E=12
2008-07-21	J Feitsma	F	Factor: 1283543345207
2008-07-21	J Feitsma	F	Factor: 119395217