1 901 833 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
68596236480123392468273	23	75.9	2021-12-10 12:35:35
3653657995690532672001191	25	81.6	2020-02-29 14:19:36

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	Shift
Verified (Factored)		Thomas Honold	82737CD23C0B8A78	0
Verified (Factored)	1998-12-27	Kent Lee	82737CD23C0B8A78	655995
Verified (Factored)	2015-07-14	MadPoo	82737CD23C0B8A78	1515933

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2020-03-01	Christoph Zenger	61324458FB85F6A1	1	47631	5	3
Verified (Factored)	2020-03-02	Team_Inspector	61324458FB85F6A1	1	287265	5	3
Verified	2021-12-12	carlos56	61324458FB85F6A1	2	1648824	5	3
Verified	2021-12-13	carlos56	61324458FB85F6A1	2	1117382	5	3

History

Date	User	Type	Result
2021-12-13	carlos56	C-PRP	M1901833/68596236480123392468273/3653657995690532672001191 : 61324458FB85F6A1 PRP proof power = 7 PRP: Verified PRP proof never uploaded
2021-12-12	carlos56	C-PRP	M1901833/68596236480123392468273/3653657995690532672001191 : 61324458FB85F6A1 PRP proof power = 7 PRP: Verified PRP proof never uploaded
2021-12-10	TJAOI	F-ECM	Factor: 68596236480123392468273 / (ECM curve 97, B1=50000, B2=6600000)
2020-03-02	Team_Inspector	C-PRP	M1901833/3653657995690532672001191 : 61324458FB85F6A1 PRP: Verified (Factored) PRP without proof (not generated)
2020-03-01	Christoph Zenger	C-PRP	M1901833/3653657995690532672001191 : 61324458FB85F6A1 PRP: Verified (Factored) PRP without proof (not generated)
2020-02-29	mnd9	F-ECM	Factor: 3653657995690532672001191 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4305537578383394)
2019-04-25	chuenkit	NF	no factor from 2^67 to 2^68
2017-11-24	mikr	NF-PM1	B1=8000000, B2=320000000, E=12
2017-03-03	Smok_bmv	NF	no factor from 2^66 to 2^67
2015-08-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-14	MadPoo	C-LL	82737CD23C0B8A78
2015-05-16	monst	NF	no factor from 2^64 to 2^65
2015-05-16	omylist	NF	no factor from 2^63 to 2^64
2011-06-16	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2011-02-07	Carsten Kossendey	NF-PM1	B1=105000, B2=1785000, E=6
2011-01-14	GrunwalderGIMP	NF	no factor from 2^62 to 2^63
2011-01-14	GrunwalderGIMP	NF	no factor from 2^61 to 2^62
2009-05-24	Architects Cubed	NF	no factor from 2^60 to 2^61