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Info PrimeGrid Challenges 2025

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igor_kavinski said:
Probably coz of the Prime Score: https://www.primegrid.com/forum_thread.php?id=8320
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No. Prime sizes are based on number of digits. It's the second largest prime found by the Primegrid project. It's the 16th largest found in the world. Meaning other projects or prime searchers have found 15 primes larger than that one.

This is a much bigger deal than who has the most Primegrid points in a prime grid challenge or how many hosts someone has.

Additionally those 12-core instances on TSC (powered by GCP) are not full servers. They're VMs. Meaning those "servers" can hold multiple numbers of those 12-core instances per server.

If you wanted to count them as individual hosts then you'll need to count your single 96-core Genoa setup as individual hosts. So it would be 26 of your hosts vs 88 of his.
 
Skillz said:
No. Prime sizes are based on number of digits. It's the second largest prime found by the Primegrid project. It's the 16th largest found in the world. Meaning other projects or prime searchers have found 15 primes larger than that one.

This is a much bigger deal than who has the most Primegrid points in a prime grid challenge or how many hosts someone has.

Additionally those 12-core instances on TSC (powered by GCP) are not full servers. They're VMs. Meaning those "servers" can hold multiple numbers of those 12-core instances per server.

If you wanted to count them as individual hosts then you'll need to count your single 96-core Genoa setup as individual hosts. So it would be 26 of your hosts vs 88 of his.
Click to expand...
I also counts by dividing to 70 by 5 and that equals 14 servers vs my 7. This was an approximation, he has 19 other host that are AMD desktops and his 19 far exceeds my 8 and he has 8 of his are 9950x, the most powerful desktop, plus 2 9900x plus...... I was trying to make a point, and I think I made it.

edit: I also was trying to make my point far before I found out that I made a prime.
 
Markfw said:
I also counts by dividing to 70 by 5 and that equals 14 servers vs my 7. This was an approximation, he has 19 other host that are AMD desktops and his 19 far exceeds my 8 and he has 8 of his are 9950x, the most powerful desktop, plus 2 9900x plus...... I was trying to make a point, and I think I made it.

edit: I also was trying to make my point far before I found out that I made a prime.
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That's assuming those servers GCP is using has 30 cores, 60 threads which I doubt that's right. They're probably 96-core Cascade Lake CPUs from ~2019.

Not sure how you're counting 19 vs 8.

You know what, here let's do it this way.

TNG = 824 Cores with a mix of Zen4 and Intel Skylake CPUs
Mark = 656 Cores with all mostly Zen4.

824 cores vs 656 cores. Not that big of a difference when talking numbers that large. It's for sure not that much more. Definitely not even twice as much. Additionally those 12-core VMs from GCP are on shared servers meaning those servers are most likely doing other things on them as well. They're not dedicated to BOINC.

With that being said, the current #1 place person, Icecold is currently killing it with his own hardware, running in his basement and it's ALL mostly Intel stuff. In fact most of the CPUs he is using cost ~$100 - $200, on boards that cost little to nothing with used parts bin mix-match RAM from eBay.

Again, none of this means anything. Who cares what someone is running or isn't running. The point of Primegrid is to eliminate the candidates and the reward is being the one who finds the prime(s) and YOU FOUND the prime. The second largest Primegrid prime. Yet you're STILL here complaining about TNG using cloud. Unbelievable.
 
Congrats on the big prime, one that will stay in the top 100 for quite some time.

Ya could always rent the cloud servers yourself for periods then not have to worry about the A/C or tripping breakers.
 
Skillz said:
That's assuming those servers GCP is using has 30 cores, 60 threads which I doubt that's right. They're probably 96-core Cascade Lake CPUs from ~2019.

Not sure how you're counting 19 vs 8.

You know what, here let's do it this way.

TNG = 824 Cores with a mix of Zen4 and Intel Skylake CPUs
Mark = 656 Cores with all mostly Zen4.

824 cores vs 656 cores. Not that big of a difference when talking numbers that large. It's for sure not that much more. Definitely not even twice as much. Additionally those 12-core VMs from GCP are on shared servers meaning those servers are most likely doing other things on them as well. They're not dedicated to BOINC.

With that being said, the current #1 place person, Icecold is currently killing it with his own hardware, running in his basement and it's ALL mostly Intel stuff. In fact most of the CPUs he is using cost ~$100 - $200, on boards that cost little to nothing with used parts bin mix-match RAM from eBay.

Again, none of this means anything. Who cares what someone is running or isn't running. The point of Primegrid is to eliminate the candidates and the reward is being the one who finds the prime(s) and YOU FOUND the prime. The second largest Primegrid prime. Yet you're STILL here complaining about TNG using cloud. Unbelievable.
Click to expand...
First, I said nothing about Icecold's farm, as I have no idea what he has, second I only though it was Interesting that the cloud has Intel servers thats are basically half the power of Zen 4, and last, AFTER I was commenting on TNGs farm, only THEN did I find out about the prime, and I was grateful that I did that FOR OUR TEAM, THE BEST EVER @! I don't know why you are belittling me.

Icecold will still have the best score for our team on this contest, which is also a nice accomplishment.
 
I got a PM from Michael Goetz at primegrid. I assume he is one of the moderators or something ? He wanted the correct information on the CPU. I told him Genoa 9554 ES. He wanted it for the announcement.
 
Markfw said:
I got a PM from Michael Goetz at primegrid. I assume he is one of the moderators or something ? He wanted the correct information on the CPU. I told him Genoa 9554 ES. He wanted it for the announcement.
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For heavy AVX-512 stuff, the 9554 QS junk works just about the same at 400W TDP as retail. Mine runs all day on heavy 64 threaded workloads like PG at 3.5 giggles but can use all the 400 W TDP that I give it in the bios!
 
cellarnoise said:
For heavy AVX-512 stuff, the 9554 QS junk works just about the same at 400W TDP as retail. Mine runs all day on heavy 64 threaded workloads like PG at 3.5 giggles but can use all the 400 W TDP that I give it in the bios!
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Well, mine are supposedly ES, I told him 9554 ES, I could be wrong.

EDIT I replied again, and they seem to be QS per googling.
 
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Day 5 stats:

Rank___Credits____Username
1______60661326___Icecold
3______55799271___markfw
6______27305242___crashtech
8______23451898___cellarnoise2
10_____17081485___ChelseaOilman
18_____9156655____[TA]Skillz
28_____5102794____w a h
31_____4320351____Orange Kid
71_____2178044____mmonnin
83_____1646795____waffleironhead
89_____1500670____johnnevermind
106____1242266____Ken_g6
246____120644___10esseeTony
266____104261_____IEC

Rank__Credits____Team
1_____209671708___TeAm AnandTech
2_____77197207___Czech National Team
3_____58596795___Antarctic Crunchers
4_____50743428___[H]ard|OCP

And congrats to Mark on the huge prime! 👍
 
I saw what you posted on the PG message boards. Technically your prime hasn't been verified yet. When it is, you will get a badge, and it will look like this:
1st_gc69.png
 
Ken g6 said:
I saw what you posted on the PG message boards. Technically your prime hasn't been verified yet. When it is, you will get a badge, and it will look like this:
1st_gc69.png
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Micheal was the one that said I got it and wanted to know some details before he announced it, so thats why I said it.
 
igor_kavinski said:
I guess verifying such a large prime is also going to take DAYS?
Click to expand...

Considering they normally use a 1-core Digital Ocean droplet to verify primes. Yeah, it'll take days. Maybe even weeks to verify. Unless they use something different this time. Which I've seen them talk about sometimes using other hardware. Such as using their own hardware to test. So I guess we will just have to wait and find out.
 
Skillz said:
Considering they normally use a 1-core Digital Ocean droplet to verify primes. Yeah, it'll take days. Maybe even weeks to verify. Unless they use something different this time. Which I've seen them talk about sometimes using other hardware. Such as using their own hardware to test. So I guess we will just have to wait and find out.
Click to expand...
Well, at least it came from my server, so no worries on the processor/memory . If that was bad, it would be a 1 on a billion error. And that one uses 4800 registered ECC.
 
Day 6 stats:

Rank___Credits____Username
2______68963914___Icecold
3______66957541___markfw
6______33033792___crashtech
9______25888251___cellarnoise2
10_____22001147___ChelseaOilman
19_____10235913___10esseeTony
20_____9156655____[TA]Skillz
31_____5327091____Orange Kid
35_____5102794____w a h
79_____2178044____mmonnin
83_____2014210____waffleironhead
91_____1787803____johnnevermind
105____1469419____Ken_g6
276____104261_____IEC

Rank__Credits____Team
1_____254220841___TeAm AnandTech
2_____93914647___Czech National Team
3_____76832721___Antarctic Crunchers
4_____61806629___[H]ard|OCP

I guess @TennesseeTony had a dump. 😱
 
Markfw said:
so, it took me 11 hours to find it, but it will take about 12 days to verify it. strange.
Click to expand...
Well, one, they're only using one core, and two, I think the test you did was only a probable primality test. There are extremely rare "pseudoprimes" that pass such a "PRP" test but aren't prime. So they're doing a more thorough test.
 
TennesseeTony said:
Hey. @StefanR5R . Speed up buddy!
Click to expand...
For a combination of reasons, I pitted just one computer in this race. And in order to keep it that way for the whole race, I have not been looking at stats (apart from @Ken g6's stats, in which neither I nor my host team is showing). Among the reasons are that electricity prices were once quick to go up but then have been, and still are, … s … l … o … w … to go down again. And that I am continuously failing to carve out some spare time to build more computers with PrimeGrid-worthy CPU caches.
 
Ken g6 said:
Well, one, they're only using one core, and two, I think the test you did was only a probable primality test. There are extremely rare "pseudoprimes" that pass such a "PRP" test but aren't prime. So they're doing a more thorough test.
Click to expand...
One core ? Hard to imagine anybody has a computer that old, but whatever....
 
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