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Forum: Aliquot Sequences 2021-04-12, 05:33
Replies: 14
Views: 363
Posted By Happy5214
As a suggestion (without looking at the code),...

As a suggestion (without looking at the code), would it be possible to treat perfect numbers as a special case? For example, instead of the above output for 28, perhaps something like:

Enter...
Forum: Aliquot Sequences 2021-04-10, 22:15
Replies: 1,077
Views: 86,087
Posted By Happy5214
And another termination. 220^55 terminates at 59.

And another termination. 220^55 terminates at 59.
Forum: Aliquot Sequences 2021-04-10, 19:46
Replies: 1,077
Views: 86,087
Posted By Happy5214
Another merge to report: 46^65:i1037 merges...

Another merge to report:

46^65:i1037 merges with 2710248:i240
Forum: Riesel Prime Search 2021-04-10, 05:53
Replies: 409
Views: 65,669
Posted By Happy5214
The aforementioned double-check of k=14549535 for...

The aforementioned double-check of k=14549535 for n=125k-300k is complete. In addition to the known primes, the following new primes were found:
14549535*2^149070-1
14549535*2^160953-1
...
Forum: Riesel Prime Search 2021-04-06, 19:02
Replies: 409
Views: 65,669
Posted By Happy5214
Funny you mention that. I had started work on...

Funny you mention that. I had started work on that k in late February, but I had suspended work on my local PRPNet servers for a bit in March to work on the GIMPS PRP-CF-DC backlog. I have since...
Forum: Aliquot Sequences 2021-04-05, 19:24
Replies: 1,077
Views: 86,087
Posted By Happy5214
If it interests anyone, the abundance ratio at...

If it interests anyone, the abundance ratio at 1e7 was 0.921549, and the difference between the ratios at 1e6 and 1e7 (~0.04455) is very close to the difference between the ratios at 1e7 and 1e9...
Forum: Aliquot Sequences 2021-04-05, 15:14
Replies: 1,077
Views: 86,087
Posted By Happy5214
I dared, and I came up short. It took two hours...

I dared, and I came up short. It took two hours with 8 threads on my Kubuntu Focus, and it generated over 39 MB of factors. More than half of the time was spent on the sigma calculation Thanks to...
Forum: Aliquot Sequences 2021-04-04, 19:17
Replies: 1,077
Views: 86,087
Posted By Happy5214
I've posted a multi-threaded version (using...

I've posted a multi-threaded version (using pthreads, so use Linux or WSL) to that link. The same computer (Kubuntu Focus) runs the same test using 8 threads in 20.75 seconds. I'm running short on...
Forum: Aliquot Sequences 2021-04-04, 14:57
Replies: 1,077
Views: 86,087
Posted By Happy5214
The port is done. If that command is the...

The port is done. If that command is the invocation you tested, it definitely didn't just take seconds. My Kubuntu Focus ran it in 1 minute and 58 seconds. Instead of attaching it here, I'll link to...
Forum: Aliquot Sequences 2021-04-03, 22:26
Replies: 1,077
Views: 86,087
Posted By Happy5214
I am currently in the process of porting it. I...

I am currently in the process of porting it. I hope to have it done in the next couple of days.
Forum: Aliquot Sequences 2021-04-03, 18:59
Replies: 1,077
Views: 86,087
Posted By Happy5214
My attempt to get the first termination in column...

My attempt to get the first termination in column 9 of base 10 instead produced the fourth merge in that column. According to Ed's script (and verified manually in FactorDB):

10^109:i3390 merges...
Forum: Marin's Mersenne-aries 2021-04-03, 18:52
Replies: 147
Views: 11,474
Posted By Happy5214
And is it OK to wait over 7 months for a proof,...

And is it OK to wait over 7 months for a proof, like at least one exponent on that list (10486493)? Hence the idea of a "proof expiry" date, after which it will give up on waiting for a proof that...
Forum: Riesel Prime Search 2021-04-03, 16:44
Replies: 409
Views: 65,669
Posted By Happy5214
As of March 27, the (near-)Woodall k's listed in...

As of March 27, the (near-)Woodall k's listed in https://www.mersenneforum.org/showpost.php?p=550539&postcount=363 have been completed to n=450k. The following primes were found:

...
Forum: Aliquot Sequences 2021-04-03, 15:13
Replies: 14
Views: 363
Posted By Happy5214
I'm leaning toward using a mean of 1 for all...

I'm leaning toward using a mean of 1 for all cycles of any length, since it never really grows. For sequences ending in cycles, go all the way around (to cancel the cycle out) in order to compute the...
Forum: PrimeNet 2021-04-03, 14:58
Replies: 11
Views: 347
Posted By Happy5214
I'll get to the DCs eventually (I only have one...

I'll get to the DCs eventually (I only have one good computer, which runs part-time). Rather than say five Hail Marys (which I'm loathe to do as I'm now an atheist), I'll instead rewrite the prayer...
Forum: Marin's Mersenne-aries 2021-04-03, 14:34
Replies: 147
Views: 11,474
Posted By Happy5214
Can we figure out a way to open up the exponents...

Can we figure out a way to open up the exponents in post #113 for DC reservation? I can't manually reserve them either. If they're waiting on proof uploads (which will likely never arrive at this...
Forum: Aliquot Sequences 2021-04-02, 19:50
Replies: 1,077
Views: 86,087
Posted By Happy5214
Eventually, I want to use MathJax and TeX if...

Eventually, I want to use MathJax and TeX if possible to render the proofs, so I'll hold off on editing them for now. I fixed the ampersands and headers (I promoted everything to h3 and deleted the...
Forum: PrimeNet 2021-04-02, 18:43
Replies: 11
Views: 347
Posted By Happy5214
Righting a wrong

I've been contributing off-and-on to GIMPS for 13 years, especially over the past couple, but I've never completed a FT LL test. Selfishly wanting to "get one under my belt" before they disappear, I...
Forum: Computer Science & Computational Number Theory 2021-03-31, 11:27
Replies: 5
Views: 276
Posted By Happy5214
Good to know. I'll be keeping an eye out for that.

Good to know. I'll be keeping an eye out for that.
Forum: Aliquot Sequences 2021-03-29, 12:19
Replies: 9
Views: 311
Posted By Happy5214
My primary desktop is a 2008-era Core 2, so I...

My primary desktop is a 2008-era Core 2, so I lack the patience to do cofactors larger than 120 digits unless it's a downdriver. There are still plenty of sequences in the 2M-3M starting value range...
Forum: Computer Science & Computational Number Theory 2021-03-29, 10:41
Replies: 5
Views: 276
Posted By Happy5214
Verification of Feitsma's psp(2) data

I have no idea if this is the right place to post this, so someone can move it if necessary. Did Cleaver and Gilchrist, or anyone else for that matter, ever finish the independent verification of Jan...
Forum: Aliquot Sequences 2021-03-28, 16:55
Replies: 1,077
Views: 86,087
Posted By Happy5214
To answer your last question first, I'd remove...

To answer your last question first, I'd remove that stuff unless there's something you want to do with that info. It's all available in this thread, and it doesn't really benefit the conjecture list....
Forum: Aliquot Sequences 2021-03-28, 11:40
Replies: 14
Views: 363
Posted By Happy5214
First of all, the translation came through...

First of all, the translation came through correctly. Geometric means work better than arithmetic means for growth rates, which seem to be what the quotients are really serving as, so I think they're...
Forum: Aliquot Sequences 2021-03-27, 17:25
Replies: 3,437
Views: 316,039
Posted By Happy5214
Releasing 2595582

Releasing 2595582
Forum: Aliquot Sequences 2021-03-25, 18:08
Replies: 1,077
Views: 86,087
Posted By Happy5214
I went ahead and compiled together the conjecture...

I went ahead and compiled together the conjecture web page based on the attachment in an earlier post. I kept the full section titles rather than using the CSS counters in this version, though that...
Showing results 1 to 25 of 566

 
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