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Forum: Five or Bust - The Dual Sierpinski Problem 2020-10-21, 10:25
Replies: 90
Views: 86,138
Posted By henryzz
Not much use posting that without the search...

Not much use posting that without the search limits
Forum: PrimeNet 2020-10-20, 20:10
Replies: 2,026
Views: 151,046
Posted By henryzz
How much complexity is support for v4 clients...

How much complexity is support for v4 clients adding now? Is that holding us back in any way? They aren't providing much in the way of results any more.
Forum: Factoring 2020-10-19, 22:04
Replies: 61
Views: 2,431
Posted By henryzz
Or better still, use tee

Or better still, use tee
Forum: Hardware 2020-10-17, 16:12
Replies: 9
Views: 406
Posted By henryzz
I believe .net core is much better at running on...

I believe .net core is much better at running on linux
Forum: Hardware 2020-10-14, 14:16
Replies: 25
Views: 1,059
Posted By henryzz
It would be interesting to see how many cores and...

It would be interesting to see how many cores and at what speed provide the maximum efficiency(lowest TDP limit) at the minimum clock speed that reaches 130 iter/sec
Forum: Math 2020-10-14, 12:37
Replies: 12
Views: 481
Posted By henryzz
For 2^n+1 to be prime n must be a power of 2...

For 2^n+1 to be prime n must be a power of 2 https://mathworld.wolfram.com/FermatNumber.html has a proof of this.
Forum: Hardware 2020-10-09, 12:55
Replies: 25
Views: 1,059
Posted By henryzz
Is it possible the L3 bandwidth limit is being...

Is it possible the L3 bandwidth limit is being hit?
Forum: News 2020-10-06, 14:09
Replies: 311
Views: 23,349
Posted By henryzz
We don't although for a Mersenne prime we have a...

We don't although for a Mersenne prime we have a tradition of multiple tests. I think the EFF might have required it back when we were going for the 10M digit prize.
Given we have had false-positive...
Forum: Math 2020-10-06, 05:20
Replies: 8
Views: 428
Posted By henryzz
It looks like Yang's paper is an improvement to...

It looks like Yang's paper is an improvement to clarity. I have tried and failed with other references in the past. Time for another go at some point. Congratulations on getting this working.
Forum: Software 2020-10-05, 08:27
Replies: 6
Views: 246
Posted By henryzz
Better still might be to reduce the cpu speed to...

Better still might be to reduce the cpu speed to match the memory throughput and still use all cores. Generally lower speeds need less power/cycle. Experimentation might be needed there.
Forum: Software 2020-09-19, 05:50
Replies: 447
Views: 33,461
Posted By henryzz
What is the best way to convert fkbnsieve output...

What is the best way to convert fkbnsieve output to abc format rather than abcd?
Forum: Software 2020-09-19, 05:31
Replies: 27
Views: 1,504
Posted By henryzz
It sounds like the additional memory usage(and...

It sounds like the additional memory usage(and hence memory bandwidth) may be an issue. Would 64x be enough that arithmetic using double-floats would be useful?
Forum: Hardware 2020-09-18, 18:17
Replies: 171
Views: 10,251
Posted By henryzz
From what I have heard not a paper launch. People...

From what I have heard not a paper launch. People are buying more currently due to being home because of COVID. Production of previous-gen stopped before launch and I believe stocks were low of them...
Forum: Factoring 2020-09-16, 20:02
Replies: 6
Views: 413
Posted By henryzz
Are there any good examples of snfs with...

Are there any good examples of snfs with nonlinear polynomials? As far as I know only gnfs has been done with nonlinear.
Forum: Factoring 2020-09-14, 19:55
Replies: 17
Views: 1,568
Posted By henryzz
I have been thinking. You said above that we need...

I have been thinking. You said above that we need 3 separate factor base bounds B leading to ~3B relations. I am not sure this is true. Why can a factor p of [$]ex-c[/$] for one relation not be...
Forum: Software 2020-09-10, 19:03
Replies: 461
Sticky: Prime95 v30.3
Views: 27,289
Posted By henryzz
I think the way to do this would be to start work...

I think the way to do this would be to start work and then initiate a benchmark. The work would be resumed after the benchmark.
Forum: Factoring 2020-09-09, 07:09
Replies: 17
Views: 1,568
Posted By henryzz
Brilliant. That is a good proof of concept...

Brilliant. That is a good proof of concept polynomial getting into the subquadratic zone. We can't afford that amount time to find it but there will quite possibly be ways of speeding that up.
Now...
Forum: Conjectures 'R Us 2020-09-08, 20:31
Replies: 5
Views: 488
Posted By henryzz
How does the performance compare per watt on...

How does the performance compare per watt on typical hardware?
Forum: Conjectures 'R Us 2020-09-08, 20:29
Replies: 293
Sticky: News
Views: 31,670
Posted By henryzz
RIP :cry: He has contributed heavily to both...

RIP :cry:
He has contributed heavily to both CRUS and NPLB over the years pushing on as long as the body allowed.
Forum: Factoring 2020-09-07, 15:20
Replies: 17
Views: 1,568
Posted By henryzz
The challenge is finding a combination of...

The challenge is finding a combination of primes(and positions) that is small enough. You could just try all the combinations(probably too many for more than 2 primes) or you could fix on one prime...
Forum: Factoring 2020-09-07, 07:23
Replies: 17
Views: 1,568
Posted By henryzz
My best from an overnight run is 95 bits c...

My best from an overnight run is 95 bits c 246324880754792 f 340506157925797 with honourable mention to 94 bits c 59428543683842 f 219230084555353 which was found a lot easier.
That gives us a clue...
Forum: Factoring 2020-09-06, 17:58
Replies: 17
Views: 1,568
Posted By henryzz
It looks like your above code relies on a more...

It looks like your above code relies on a more recent version of your code than that on Github. For example PrimeBase.instance.build expects 1 argument not 2, MathUtils.ressol doesn't exist and...
Forum: Factoring 2020-09-06, 17:18
Replies: 17
Views: 1,568
Posted By henryzz
Have tried installing IntelliJ and compiling your...

Have tried installing IntelliJ and compiling your quadratic sieve code. I get huge amounts of warnings about missing dependencies such as java.lang.Object. Is there something I am missing? edit:...
Forum: Factoring 2020-09-05, 14:48
Replies: 17
Views: 1,568
Posted By henryzz
Looks like I misread your post yesterday you did...

Looks like I misread your post yesterday you did suggest a way of finding a*b.

[$]a*b \approx N[/$] unless [$]c \approx N^{\frac{1}{2}}[/$]. Unfortunately we would like c smaller than that...
Forum: Factoring 2020-09-04, 21:03
Replies: 17
Views: 1,568
Posted By henryzz
How do you propose finding a and b?

How do you propose finding a and b?
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