2 719 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁶⁶

TF target 2⁴⁴

TF below 2^219 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	2000000000000
B2 =	2500766411279556420

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	40830 / 40830
60	260000000	105362 / 105362
65	800000000	194238 / 194238
70	2400000000	160664 / 350860

Estimated T-Level: 67.3 ⓘ

Status	Date	User	Residue	Shift
Verified		Unknown	1C43	0
Verified		George Woltman	F11C68200EA21C43	0
Verified		Brian J. Beesley	F11C68200EA21C43	0
Verified	2015-04-11	MadPoo	F11C68200EA21C43	751

History

Date	User	Type	Result
2024-12-08	coffeeguy	NF-PM1	B1=2000000000000, B2=2500766411279556420
2023-08-11	masser	NF-PP1	Start=6/5, B1=3580000000, B2=640820000000
2023-07-16	masser	NF-PP1	Start=124/41, B1=3580000000, B2=143200000000
2023-07-03	masser	NF-PM1	B1=216000000000, B2=486755758363664790
2022-05-22	Anton Repko	NF	no factor from 2^65 to 2^66
2021-05-13	ATH	NF-PP1	Start=2/7, B1=1000000000, B2=241000000000
2021-02-17	Anton Repko	NF	no factor from 2^64 to 2^65
2018-03-03	snme2pm1	NF	no factor from 2^63 to 2^64
2016-10-10	snme2pm1	NF	no factor from 2^62 to 2^63
2016-06-14	alex	NF-PM1	B1=1000000000000, B2=10154590139388108
2016-05-08	-Anonymous-	NF-PM1	B1=100000000000, B2=1000000000000, E=12
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-07-02	snme2pm1	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	F11C68200EA21C43
2013-09-30	David Campeau	NF-PM1	B1=10229590000, B2=716071300000, E=12
2012-05-22	bcp19	NF	no factor from 2^60 to 2^61
2011-04-17	Joss	NF-PM1	B1=10000000000
2011-01-19	monst	NF	no factor from 2^58 to 2^60