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Search: Posts Made By: Joe O
Forum: Lounge 2017-01-01, 14:34
Replies: 1
Views: 901
Posted By Joe O
http://www.mathsisfun.com/definitions/vinculum.htm...

http://www.mathsisfun.com/definitions/vinculum.html
Forum: Factoring 2016-09-30, 17:28
Replies: 102
Views: 10,340
Posted By Joe O
Within 30 minutes of 30 days later we have ...

Within 30 minutes of 30 days later we have
58,438 - 57,363 = 1,075 so about 5 short of 36 a day for F12
83,175 - 82,193 = 982 so about 8 short of 33 a day for F13
Forum: GPU Computing 2016-09-23, 16:26
Replies: 5
Views: 1,177
Posted By Joe O
I can run it on a GTX 750 TI if you send it to me.

I can run it on a GTX 750 TI if you send it to me.
Forum: Factoring 2016-09-14, 13:40
Replies: 9
Views: 1,137
Posted By Joe O
Thank You!

Thank You!
Forum: Factoring 2016-09-01, 14:16
Replies: 9
Views: 1,137
Posted By Joe O
Pollard rho questions

"Improved Pollard rho method for computing discrete logarithms over finite extension fields"
by Ping Wang, , Fangguo Zhang,
Has anyone read this? I can only find it behind a pay wall.
Forum: Factoring 2016-08-31, 13:31
Replies: 102
Views: 10,340
Posted By Joe O
So we currently have F12: 57,363 of 360,000...

So we currently have
F12: 57,363 of 360,000 for 65 digits
F13: 82,193 of 112,000 for 60 digits

Now we probably can take F13 to the next level, and start on 65 digits. But what happens when...
Forum: YAFU 2016-08-25, 11:44
Replies: 260
Views: 28,297
Posted By Joe O
Thank You!

Thank You!
Forum: YAFU 2016-08-21, 21:27
Replies: 260
Views: 28,297
Posted By Joe O
Has this been implemented? Can it be? It would...

Has this been implemented? Can it be? It would be a great help for me, and possibly others that have to share machines.
Forum: Sierpinski/Riesel Base 5 2016-08-21, 17:47
Replies: 5
Views: 6,722
Posted By Joe O
Congratulations to 288larsson for finding our 6th...

Congratulations to 288larsson for finding our 6th SR5 prime of the year,
The prime 180062*5^2249192-1 eliminates k=180062 from the base 5 Riesel problem. 74 ks remain.

This is largest known...
Forum: Sierpinski/Riesel Base 5 2016-06-04, 02:26
Replies: 5
Views: 6,722
Posted By Joe O
The 1,549,387 digit SR5 prime 53546*5^2216664-1...

The 1,549,387 digit SR5 prime 53546*5^2216664-1 was discovered on May 30th.
Forum: Lounge 2016-04-06, 11:53
Replies: 0
Views: 343
Posted By Joe O
A tribute to Lennart

http://www.primegrid.com/forum_thread.php?id=6717
The GCW - Mathematics Awareness Month Challenge - 01-08 April has turned into a tribute to Lennart. There are only two days left in the challenge,...
Forum: Sierpinski/Riesel Base 5 2016-03-28, 15:00
Replies: 5
Views: 6,722
Posted By Joe O
rank prime digits ...

rank prime digits who when

50 296024 · 5^2185270 - 1 1527444 L671 Mar 2016
Forum: Hardware 2016-03-20, 01:14
Replies: 192
Views: 21,674
Posted By Joe O
Your switch and both the netgears require 7.5V DC...

Your switch and both the netgears require 7.5V DC
no need to cut the cord just get one with the right terminator.
I'll look to see if I can find a switch that runs on 5V DC

Bingo! The successor...
Forum: Hardware 2016-03-19, 19:47
Replies: 192
Views: 21,674
Posted By Joe O
How big is your network switch? 5 port 4.1" x...

How big is your network switch?
5 port 4.1" x 3.7" x 1.1" Netgear Fs105 picture attached
8 port 6.2" x 4.1" x 1.1" Netgear Fs 108
Forum: Hardware 2016-03-19, 19:04
Replies: 192
Views: 21,674
Posted By Joe O
http://www.bestbuy.com/site/sandisk-cruzer-fit-16g...

http://www.bestbuy.com/site/sandisk-cruzer-fit-16gb-usb-2-0-flash-drive-black/3613746.p?id=1218444155822&skuId=3613746&lsft=ref:212,loc:1&ksid=14d9e96f-d422-34c8-7222-00002b57957d&ksprof_id=8&ksaffcod...
Forum: Sierpinski/Riesel Base 5 2016-03-16, 21:33
Replies: 5
Views: 6,722
Posted By Joe O
Aus_Karlos found the world record base 5 mega...

Aus_Karlos found the world record base 5 mega prime 92158*5^2145024+1. This prime is 1,499,313 digits long.

This eliminates k=92158 from the base 5 Sierpinski problem, leaving 33 k's remaining....
Forum: Sierpinski/Riesel Base 5 2016-03-14, 04:35
Replies: 3
Views: 4,197
Posted By Joe O
In my enthusiasm I swept up 2 primes that were...

In my enthusiasm I swept up 2 primes that were not for our ks, so the total was 3 primes for the year.

154222 · 5^2091432 + 1 1461854 L3523 Nov 2015
100186 · 5^2079747 - 1 ...
Forum: Sierpinski/Riesel Base 5 2016-03-14, 04:30
Replies: 1
Views: 3,441
Posted By Joe O
The last prime on the list was not for one of our...

The last prime on the list was not for one of our ks, so 13 primes found for the year
Forum: Sierpinski/Riesel Base 5 2016-03-14, 04:27
Replies: 15
Views: 63,925
Posted By Joe O
and the 26th prime for the year was ...

and the 26th prime for the year was
37292 · 5^1487989 + 1
with 1040065 digits found by L3553 Dec 2013
Forum: Sierpinski/Riesel Base 5 2016-03-14, 01:24
Replies: 1
Views: 2,768
Posted By Joe O
Not only does the challenge start at an unusual...

Not only does the challenge start at an unusual time, but the US just switched to Daylight Savings Time today. Please make sure you've got the starting time correct!
Forum: Sierpinski/Riesel Base 5 2016-03-13, 18:03
Replies: 1
Views: 2,768
Posted By Joe O
PrimeGrid running a 3 day challenge on this Project

http://www.primegrid.com/forum_thread.php?id=6675#93052

For details, please read the post in the PrimeGrid forum
The challenge will begin March 14th 2016, 03:14:15 UTC and end March 17th 2016,...
Forum: Sierpinski/Riesel Base 5 2016-03-11, 21:49
Replies: 3
Views: 7,096
Posted By Joe O
S/R Base 5 Primes in 2011...

S/R Base 5 Primes in 2011 (http://www.mersenneforum.org/showthread.php?t=14510)

S/R Base 5 Primes in 2012 (http://www.mersenneforum.org/showthread.php?t=16509)

2013 see post just above this one...
Forum: Sierpinski/Riesel Base 5 2016-03-08, 18:23
Replies: 5
Views: 6,722
Posted By Joe O
rank prime digits who ...

rank prime digits who when



53 77072 · 52139921 + 1 1495746 L4340 Mar 2016
Forum: Sierpinski/Riesel Base 5 2016-01-15, 00:59
Replies: 5
Views: 6,722
Posted By Joe O
S/R Base 5 Primes reported in 2016

rank prime digits who when comment

50 306398 · 5^2112410 - 1 1476517 L4274 Jan 2016
Forum: Sierpinski/Riesel Base 5 2016-01-02, 16:44
Replies: 3
Views: 4,197
Posted By Joe O
2344 252318 · 5^588212 + 1 411148 L1471 Feb 2015

2344 252318 · 5^588212 + 1 411148 L1471 Feb 2015
Showing results 1 to 25 of 525

 
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