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Forum: And now for something completely different 2021-05-26, 15:00
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
As this is the thread for the more unpopular...

As this is the thread for the more unpopular constellations, how about a pair of cousin primes?


(520461*2^55931+1)*(43439253939*(520461*2^55931-1)^2-3)+1...
Forum: And now for something completely different 2020-01-23, 08:29
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
18416522281203*2^33222-1 ...

18416522281203*2^33222-1
18416522281203*2^33222+5
18416522281203*2^33222+11

Primo certificates for the latter two are uploaded to factordb
Forum: And now for something completely different 2019-10-02, 19:25
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
I had a bit of fun with (x+2)*(ax²-3) ...

I had a bit of fun with (x+2)*(ax²-3) -1 / +5
= -3x - 6 +a(x³+2x²) -1 / +5

helpers are x for N+1 proof of the +5 candidate and x+2 for N+1 proof of the -1 candidate, so...
Forum: And now for something completely different 2019-06-24, 18:26
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
Had my machine fool around with polysieve and...

Had my machine fool around with polysieve and pfgw when I was on vacation. This is what I came back to:


3039197559912*2^5000+17
3039197559912*2^5000+11
3039197559912*2^5000+5...
Forum: And now for something completely different 2019-05-13, 14:39
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
10409207693*(2^20000)-1 10409207693*(2^20000)+5...

10409207693*(2^20000)-1
10409207693*(2^20000)+5

10409207693*(2^20000)+11


Not searching this particular form any further, so now I'll update wikipedia. Not sure about trying something a...
Forum: And now for something completely different 2019-05-08, 14:45
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
8704161957*(2^20000)-1 8704161957*(2^20000)+5 ...

8704161957*(2^20000)-1
8704161957*(2^20000)+5
8704161957*(2^20000)+11


+5 and +11 proven with PRIMO
Forum: And now for something completely different 2019-04-25, 15:00
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
Thanks! I am amazed how quickly you guys learn...

Thanks! I am amazed how quickly you guys learn about such news. Are you constantly monitoring the Top5000?
Forum: And now for something completely different 2019-04-25, 14:52
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
What size are you trying to find? I might be...

What size are you trying to find? I might be tempted to go for it
Forum: And now for something completely different 2019-04-22, 20:13
Replies: 48
Views: 28,142
Posted By Puzzle-Peter
Polysieve is pretty amazing. With a little bit ...

Polysieve is pretty amazing. With a little bit of thinking it can do so many things and it is really fast. For some applications you need a lot of RAM though.
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