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Search: Posts Made By: Bobby Jacobs
Forum: Prime Gap Searches 2021-04-07, 21:13
Replies: 3
Views: 158
Posted By Bobby Jacobs
Cool! Is this the same Matt Parker that did the...

Cool! Is this the same Matt Parker that did the book "Humble Pi: When Math Goes Wrong in the Real World"? I just got that book, and I read a chapter about coincidences. If this is him, then that is a...
Forum: Prime Gap Searches 2021-04-01, 15:11
Replies: 45
Views: 14,787
Posted By Bobby Jacobs
Good job on the records!

Good job on the records!
Forum: Puzzles 2021-03-27, 19:00
Replies: 27
Views: 2,439
Posted By Bobby Jacobs
That is correct! The most words possible in a...

That is correct! The most words possible in a 15*15 crossword is 96, if the grid is symmetrical and connected, and every word has at least 3 letters.

000010000100000
000010000100000...
Forum: Puzzles 2021-03-20, 15:35
Replies: 27
Views: 2,439
Posted By Bobby Jacobs
Is anybody going to try to solve this puzzle and...

Is anybody going to try to solve this puzzle and find the 15*15 crossword with the most words?
Forum: Prime Gap Searches 2021-03-07, 20:04
Replies: 11
Views: 658
Posted By Bobby Jacobs
I look forward to finding the next maximal prime...

I look forward to finding the next maximal prime gap over 264.
Forum: Puzzles 2021-02-28, 02:52
Replies: 27
Views: 2,439
Posted By Bobby Jacobs
You can do better than 86 words.

You can do better than 86 words.
Forum: Prime Gap Searches 2021-02-21, 14:52
Replies: 236
Sticky: Prime Gap News
Views: 46,944
Posted By Bobby Jacobs
What is the new list of the first 10 unknown gaps?

What is the new list of the first 10 unknown gaps?
Forum: Puzzles 2021-02-11, 23:54
Replies: 27
Views: 2,439
Posted By Bobby Jacobs
I am talking about blocked crosswords. By the...

I am talking about blocked crosswords. By the way, your blocked crossword contains some 1-letter words (unchecked letters). Every letter must be part of a word going across and a word going down.
Forum: Puzzles 2021-02-06, 02:47
Replies: 27
Views: 2,439
Posted By Bobby Jacobs
Crosswords

Crosswords usually obey the following 3 rules.

1. The grid is symmetrical, the same upside-down.
2. The grid is connected.
3. Every word has at least 3 letters.

What is the most words that...
Forum: Prime Gap Searches 2021-01-23, 23:54
Replies: 127
Views: 23,618
Posted By Bobby Jacobs
When d=6, the coprimes are 1 and 5, so the center...

When d=6, the coprimes are 1 and 5, so the center is not very dense. When d=30, the coprimes are 1, 7, 11, 13, 17, 19, 23, 29, so the center is dense. When d=210, the coprimes are 1, 11, 13, 17, 19,...
Forum: Prime Gap Searches 2021-01-11, 19:17
Replies: 3
Views: 895
Posted By Bobby Jacobs
Interesting article. Twin primes are full of...

Interesting article. Twin primes are full of great patterns. They are very cool.
Forum: Prime Gap Searches 2020-12-27, 17:41
Replies: 38
Views: 14,181
Posted By Bobby Jacobs
I am sorry that your formula is underappreciated....

I am sorry that your formula is underappreciated. I will appreciate it more. I hope more people use it.
Forum: Prime Gap Searches 2020-12-16, 21:13
Replies: 46
Views: 4,482
Posted By Bobby Jacobs
Can we use this code to finally find maximal...

Can we use this code to finally find maximal prime gaps greater than 264?
Forum: Prime Gap Searches 2020-12-05, 22:39
Replies: 227
Views: 43,832
Posted By Bobby Jacobs
It still seems counterintuitive, but OK, it is a...

It still seems counterintuitive, but OK, it is a good explanation. It seems like since prime numbers are more common than twin primes, the gaps between primes would fill up first. In the beginning,...
Forum: Prime Gap Searches 2020-11-22, 19:40
Replies: 38
Views: 14,181
Posted By Bobby Jacobs
Is there a difference in the ranks of the best...

Is there a difference in the ranks of the best CSG values if you use g/(phi(q)*ln2(p1)) and g/(phi(q)*ln2(p2))?
Forum: Prime Gap Searches 2020-11-08, 19:06
Replies: 227
Views: 43,832
Posted By Bobby Jacobs
It is weird that we know all twin prime gaps up...

It is weird that we know all twin prime gaps up to 4426 in the numbers up to 1.05e15. However, we have searched up to 1.84467e18 for regular prime gaps, and we have still not found a gap of 716. That...
Forum: Prime Gap Searches 2020-10-28, 21:30
Replies: 127
Views: 23,618
Posted By Bobby Jacobs
What scene are you talking about? I have watched...

What scene are you talking about? I have watched "A Goofy Movie" before, and I cannot recall a scene where the word "left" was used in the way I used it.
Forum: Prime Gap Searches 2020-10-17, 22:47
Replies: 236
Sticky: Prime Gap News
Views: 46,944
Posted By Bobby Jacobs
It is funny that Euclid is in this table. I am...

It is funny that Euclid is in this table. I am pretty sure that he discovered more than 1 prime gap. lol :w00t:
Forum: Prime Gap Searches 2020-10-03, 18:21
Replies: 127
Views: 23,618
Posted By Bobby Jacobs
Left.

Left.
Forum: Prime Gap Searches 2020-09-24, 22:44
Replies: 140
Views: 26,055
Posted By Bobby Jacobs
What is the next prime gap project now?

What is the next prime gap project now?
Forum: Prime Gap Searches 2020-09-13, 22:18
Replies: 236
Sticky: Prime Gap News
Views: 46,944
Posted By Bobby Jacobs
I hope you find the missing gaps.

I hope you find the missing gaps.
Forum: Miscellaneous Math 2020-09-01, 23:49
Replies: 10
Views: 4,147
Posted By Bobby Jacobs
Cool!

Cool!
Forum: Prime Gap Searches 2020-08-22, 15:20
Replies: 52
Views: 20,648
Posted By Bobby Jacobs
I just noticed that I made a mistake in the last...

I just noticed that I made a mistake in the last sequence. The sequence of maximal gaps between maximal gaps between maximal prime gaps is 1, 4, 6, 8, 30, 38, 108, ...
Forum: Prime Gap Searches 2020-08-09, 19:50
Replies: 227
Views: 43,832
Posted By Bobby Jacobs
The program does not seem to work on my computer....

The program does not seem to work on my computer. Therefore, I will withdraw my range.
Forum: Prime Gap Searches 2020-07-30, 22:26
Replies: 4
Views: 3,617
Posted By Bobby Jacobs
The program does not seem to be working on my...

The program does not seem to be working on my computer, so I will let you have the range. I guess it was OK for you to have an infinite range. By the way, the reason that I started a new thread is...
Showing results 1 to 25 of 212

 
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