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Search: Posts Made By: rudy235
Forum: Data 2021-11-29, 00:38
Replies: 3,483
Views: 312,405
Posted By rudy235
There are 27 DC under 59 million. There are 2...

There are 27 DC under 59 million. There are 2 distinct groups 7 of them assigned Oct/ Nov 2021 and 20 of them assigned on Dec 2020. These last will not be done until they are reassigned and most...
Forum: Lounge 2021-11-01, 22:56
Replies: 42
Views: 953
Posted By rudy235
Just like the Real Estate Mantra is: Location,...

Just like the Real Estate Mantra is: Location, location, location.

Here in Forums (or Fora) it is: Context, context, context.:smile:
Forum: Lounge 2021-11-01, 18:24
Replies: 42
Views: 953
Posted By rudy235
26048 Determining the North South Axis ...

26048

Determining the North South Axis
Disregarding the 5.1% inclination of the moon orbit plane to the ecliptic plane wouldn't following the Sun path give you the easterly direction and thus...
Forum: Lounge 2021-10-31, 21:59
Replies: 42
Views: 953
Posted By rudy235
But the moon has no atmosphere and the only glare...

But the moon has no atmosphere and the only glare you have to contend is the reflection of the landscape. it is not the lansdscape's reflection that prevents you from seeing stars during daytime as...
Forum: Lounge 2021-10-31, 20:37
Replies: 42
Views: 953
Posted By rudy235
Wouldn't a 1 meter long metal or wooden tube of ...

Wouldn't a 1 meter long metal or wooden tube of 4 centimeter diameter (40 inches x 11/2 inches ø) be enough to avoid the glare? (Even better if it were in a binocular version.)
Forum: Lounge 2021-10-31, 16:42
Replies: 42
Views: 953
Posted By rudy235
All are excellent replies and there is a lot to...

All are excellent replies and there is a lot to process.

Yes definitely.

Moons and Keplerian Laws. At least the Second Law would become apparent from observing the 4 visible moons of Jupiter....
Forum: Lounge 2021-10-31, 03:40
Replies: 42
Views: 953
Posted By rudy235
Thanks for your reply. You are referencing to...

Thanks for your reply.
You are referencing to the "wobble of the Earth" every 27.33 days. However, it took The genius of Newton and Pierre Laplace in the 17th and 18th Centuries to estimate its...
Forum: Lounge 2021-10-30, 22:54
Replies: 42
Views: 953
Posted By rudy235
Thought experiment: Lunarians

Suppose that there exists a civilization on the far side of the Moon. It is a huge empire of roughly 8 million square kilometers (more or less the size of Australia)

This empire is centered at...
Forum: Riesel Prime Search 2021-10-19, 01:14
Replies: 290
Views: 51,505
Posted By rudy235
After 20 days (10/17/21) it was proven prime.

After 20 days (10/17/21) it was proven prime.
Forum: Riesel Prime Search 2021-10-16, 17:50
Replies: 290
Views: 51,505
Posted By rudy235
How difficult is to prove a primorial Prime? ...

How difficult is to prove a primorial Prime?


3267113# - 1 (https://primes.utm.edu/primes/page.php?id=132758)

Verification status (*): InProcess

Is still unproven. I would think that...
Forum: Riesel Prime Search 2021-10-15, 15:41
Replies: 1,976
Views: 226,649
Posted By rudy235
.....................HERE IS THE OFFICIAL...

.....................HERE IS THE OFFICIAL ANNOUNCEMENT

PrimeGrid’s
321 Prime Search


On 6 September 2021, 07:16:28 UTC, PrimeGrid’s 321 Prime Search found another Mega Prime:

3*217748034-1
Forum: Lounge 2021-09-28, 01:03
Replies: 1
Views: 255
Posted By rudy235
A character in the new Apple+ TV series...

A character in the new Apple+ TV series Foundation a young character named Gaal Dornick recites primes to regain composure and achieve inner peace..

She goes like this. 819,250,973 ... 819,250,997...
Forum: Riesel Prime Search 2021-09-28, 00:25
Replies: 290
Views: 51,505
Posted By rudy235
Yes, in the last few days we have had two new...

Yes, in the last few days we have had two new categories of primes entering the megaprime territory. A Palindromic (https://en.wikipedia.org/wiki/Palindromic_prime) with 1,234,567 digits and this...
Forum: Riesel Prime Search 2021-09-25, 01:14
Replies: 290
Views: 51,505
Posted By rudy235
This is an incredible result! ...

This is an incredible result! https://primes.utm.edu/primes/page.php?id=132738



But now we have two different record arithmetic progression of 3 elements of 884,748 and 807,954 digits. the...
Forum: Riesel Prime Search 2021-09-15, 18:17
Replies: 290
Views: 51,505
Posted By rudy235
Wow! A megaprime palindrome. And one with more...

Wow! A megaprime palindrome. And one with more than twice the digits than the previous one!

I have to see it to believe it!:philmoore:
Forum: Riesel Prime Search 2021-09-11, 16:50
Replies: 290
Views: 51,505
Posted By rudy235
Of course all repunits are “palindromes” per se,...

Of course all repunits are “palindromes” per se, but in practical terms when a prime is a Mersenne, a Generalized Mersenne ( to other bases ), repunits, generalized repunits, they are not counted as...
Forum: Riesel Prime Search 2021-09-08, 04:27
Replies: 1,976
Views: 226,649
Posted By rudy235
Both forms of numbers exist, The 3*2k - 1 are...

Both forms of numbers exist,
The 3*2k - 1 are called Thabit primes and there are 64 of them known. https://oeis.org/A002235/b002235.txt

Those of the Form 3*2k + 1 are called Thabit of the...
Forum: Riesel Prime Search 2021-09-07, 18:27
Replies: 1,976
Views: 226,649
Posted By rudy235
The largest prime for 2021 and 2nd largest since...

The largest prime for 2021 and 2nd largest since Christmas 2018 has been discovered.

It is a 3 2 1 Prime i.e. 3*2k-1 The prime is 3*217748034 -1 and has 5342692 digits.

This is the largest...
Forum: Data 2021-08-28, 19:13
Replies: 3,483
Views: 312,405
Posted By rudy235
Correction: at 1 million 1,000,000

Correction: at 1 million 1,000,000
Forum: Data 2021-08-28, 17:15
Replies: 3,483
Views: 312,405
Posted By rudy235
The full list of all Magaprimes (presently 1100)...

The full list of all Magaprimes (presently 1100) can be found at this link https://primes.utm.edu/primes/search.php The minimum number of digits needs to be set at 1000000 and number of results...
Forum: Data 2021-08-28, 04:45
Replies: 3,483
Views: 312,405
Posted By rudy235
1100 Megaprimes

A new milestone of sorts was reached today. There are now 1100 megaprimes.

About half (50%) of those are either of the form k*22+1 or k*22-1
About (30%) 328 are Generalized Fermats
25 divide...
Forum: Prime Gap Searches 2021-08-24, 17:06
Replies: 66
Views: 8,752
Posted By rudy235
I was wondering exactly the same thing. On the...

I was wondering exactly the same thing. On the other hand, a number of the order of 10^19 can be proven prime easily by trial division or sieving.

Keeking track of the Numbers that STILL have...
Forum: Prime Gap Searches 2021-08-23, 19:14
Replies: 66
Views: 8,752
Posted By rudy235
ATH This is the status of the exhaustive...

ATH


This is the status of the exhaustive search. (Unless someone else has covered the numbers after 264+1.03 x1016)

To check in a reliable way that no gap greater or equal to 1432 exists...
Forum: Prime Gap Searches 2021-08-07, 08:19
Replies: 13
Views: 2,164
Posted By rudy235
Probably not.:smile:

Probably not.:smile:
Forum: Prime Gap Searches 2021-07-27, 21:06
Replies: 66
Views: 8,752
Posted By rudy235
i looked for it at the prime gap tables and it...

i looked for it at the prime gap tables and it was not there. Did you report it?
Showing results 1 to 25 of 1000

 
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