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Forum: XYYXF Project 2022-05-16, 14:10
Replies: 39
Views: 14,430
Posted By pxp
Good stuff! In my masterlist...

Good stuff! In my masterlist (http://chesswanks.com/num/a094133.txt), I've used "P" in a final column for "proven". I'll add the designation "-" for "apparently reserved" and "*" for "waiting on...
Forum: XYYXF Project 2022-05-14, 13:53
Replies: 39
Views: 14,430
Posted By pxp
Looking forward to seeing these resolved in...

Looking forward to seeing these resolved in factordb. Is anyone doing L(3522,851) or L(3896,579)? Next ones up are:

L(3502,1271)
L(3121,3070)
L(3996,539)
L(3369,1766)
L(5488,99)
...
Forum: XYYXF Project 2022-05-09, 10:08
Replies: 505
Views: 121,298
Posted By pxp
I have now finished testing the Leyland numbers...

I have now finished testing the Leyland numbers in the interval from L(303999,10) to L(304999,10) and have found therein 10 PRPs. That completes the fifth and final part of finding all PRPs in the...
Forum: XYYXF Project 2022-05-08, 21:19
Replies: 505
Views: 121,298
Posted By pxp
Not as far as I know. Go for it!

Not as far as I know. Go for it!
Forum: XYYXF Project 2022-04-23, 16:02
Replies: 505
Views: 121,298
Posted By pxp
Thanks. The number of digits is 504456 of course.

Thanks. The number of digits is 504456 of course.
Forum: XYYXF Project 2022-03-26, 18:32
Replies: 505
Views: 121,298
Posted By pxp
To Norbert & Ighu: Have either of you been...

To Norbert & Ighu: Have either of you been getting email confirmations for your PRPtop submissions? I had a time in mid- to late-December when I wasn't getting them and then, again, starting in...
Forum: XYYXF Project 2022-03-06, 16:48
Replies: 505
Views: 121,298
Posted By pxp
I have now finished testing the Leyland numbers...

I have now finished testing the Leyland numbers in the interval from L(302999,10) to L(303999,10) and have found therein 14 PRPs. Next interval is L(303999,10) - L(304999,10).
Forum: XYYXF Project 2022-02-09, 16:22
Replies: 505
Views: 121,298
Posted By pxp
Congratulations to Miklos. By the way, my list of...

Congratulations to Miklos. By the way, my list of all known Leyland primes (http://chesswanks.com/num/a094133.txt) tries hard to stay up-to-date but I will calculate an associated Leyland number...
Forum: XYYXF Project 2022-01-11, 01:07
Replies: 505
Views: 121,298
Posted By pxp
I have now finished testing the Leyland numbers...

I have now finished testing the Leyland numbers in the interval from L(301999,10) to L(302999,10) and have found therein 10 PRPs. Next interval is L(302999,10) - L(303999,10).
Forum: XYYXF Project 2021-12-21, 12:09
Replies: 505
Views: 121,298
Posted By pxp
In order to occupy a handful of old spare cores,...

In order to occupy a handful of old spare cores, I've been sieving a small number of my "LLPH" [greater than Yusuf AttarBashi's L(81650,54369), less than L(390000,10)] Leyland numbers. The...
Forum: XYYXF Project 2021-11-06, 02:51
Replies: 505
Views: 121,298
Posted By pxp
I have now finished testing the Leyland numbers...

I have now finished testing the Leyland numbers in the interval from L(300999,10) to L(301999,10) and have found therein 12 PRPs. Next interval is L(301999,10) - L(302999,10).
Forum: XYYXF Project 2021-09-12, 09:33
Replies: 505
Views: 121,298
Posted By pxp
100263^98600+98600^100263,500702 If you...

100263^98600+98600^100263,500702

If you haven't already done so, you should submit this to PRPTop, here (http://www.primenumbers.net/prptop/submit.php).
Forum: XYYXF Project 2021-09-08, 14:52
Replies: 505
Views: 121,298
Posted By pxp
Largest Leyland Prime Hunt

In fact, I found two new primes in that interval:

<386642> Jun 2021 L(81650,54369)
<386561> Aug 2021 L(80565,62824) new
<386548> Aug 2021 L(83747,41272) new
<386434> May 2014 ...
Forum: XYYXF Project 2021-08-15, 12:37
Replies: 505
Views: 121,298
Posted By pxp
I'm done. In addition to Anatoly Selevich's...

I'm done. In addition to Anatoly Selevich's L(314738,9), I found 16 new primes. The two-and-a-half months was pretty close. So to get up to 305000 decimal digits (which is on my schedule) will take...
Forum: XYYXF Project 2021-07-06, 15:40
Replies: 505
Views: 121,298
Posted By pxp
I will update my table...

I will update my table (http://chesswanks.com/num/a094133.txt) as your results come in.
Forum: XYYXF Project 2021-06-10, 21:45
Replies: 505
Views: 121,298
Posted By pxp
Since I am no longer using the final column of my...

Since I am no longer using the final column of my Leyland prime indexing chart (http://chesswanks.com/num/a094133.txt) to indicate intervals, I've added a "P" therein for entries that I know are...
Forum: XYYXF Project 2021-06-09, 10:28
Replies: 505
Views: 121,298
Posted By pxp
I have examined all Leyland numbers in the two...

I have examined all Leyland numbers in the two gaps between L(49413,580) <136550>, #2485, and L(49878,755) <143547> and found 123 new primes. That makes L(49878,755) #2610 and advances the index to...
Forum: XYYXF Project 2021-06-01, 15:50
Replies: 505
Views: 121,298
Posted By pxp
As my search of interval #22 winds down (ten or...

As my search of interval #22 winds down (ten or so day to go), I started (yesterday) the interval from L(299999,10) to L(300999,10). A preliminary estimate suggests that this will require some...
Forum: XYYXF Project 2021-04-30, 00:51
Replies: 505
Views: 121,298
Posted By pxp
I have examined all Leyland numbers in the four...

I have examined all Leyland numbers in the four gaps between L(44541,746) <127955>, #2339, and L(49205,532) <134129> and found 99 new primes. That makes L(49205,532) #2442 and advances the index to...
Forum: XYYXF Project 2021-03-27, 14:38
Replies: 505
Views: 121,298
Posted By pxp
I have examined all Leyland numbers in the seven...

I have examined all Leyland numbers in the seven gaps between L(48694,317) <121787>, #2221, and L(44541,746) <127955> and found 111 new primes. That makes L(44541,746) #2339.

So much for my March...
Forum: XYYXF Project 2021-03-18, 19:39
Replies: 505
Views: 121,298
Posted By pxp
Leyland primes curve fit

I was curious about how many more new primes I was going to find in my current interval (#19) as well as the two subsequent ones (#20 & #22) so I decided to do a more formal calculation instead of my...
Forum: XYYXF Project 2021-03-11, 16:31
Replies: 505
Views: 121,298
Posted By pxp
I'm guessing that I have used pfgw64 on some 5...

I'm guessing that I have used pfgw64 on some 5 million Leyland numbers since I started using it back in early July of last year. This is the first error encountered (this morning) using it:

Expr =...
Forum: XYYXF Project 2021-03-01, 18:16
Replies: 505
Views: 121,298
Posted By pxp
I have examined all Leyland numbers in the eight...

I have examined all Leyland numbers in the eight gaps between L(45405,286) <111532>, #2070, and L(48694,317) <121787> and found 143 new primes. That makes L(48694,317) #2221.
Forum: XYYXF Project 2021-02-25, 21:38
Replies: 505
Views: 121,298
Posted By pxp
It looks like I overestimated this by a week or...

It looks like I overestimated this by a week or so. In fact, a couple of my processors have already finished their assigned ranges and I have wasted no time getting them started on interval #19.
Forum: XYYXF Project 2021-01-24, 17:34
Replies: 505
Views: 121,298
Posted By pxp
I have examined all Leyland numbers in the gap...

I have examined all Leyland numbers in the gap between L(144999,10) <145000> and L(145999,10) <146000> and found 7 new primes.

I started interval #18 yesterday. It may be another three days before...
Showing results 1 to 25 of 214

 
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