mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 5 of 5
Search took 0.01 seconds.
Search: Posts Made By: mart_r
Forum: Other Mathematical Topics 2022-07-15, 19:35
Replies: 7
Views: 1,048
Posted By mart_r
Maybe so. But those would depend on two or three...

Maybe so. But those would depend on two or three different variables, I reckon that they would be much harder to calculate. I don't yet have the prerequisites to figure out efficient ways to do that,...
Forum: Other Mathematical Topics 2022-07-14, 20:12
Replies: 7
Views: 1,048
Posted By mart_r
OK, thanks! It's interesting to note that the...

OK, thanks!
It's interesting to note that the prime terms in A120857 are similar to those I gave in post # 2. Maybe compute more terms of A120857 and see how many more coincide with my list?
Until...
Forum: Other Mathematical Topics 2022-07-13, 21:38
Replies: 7
Views: 1,048
Posted By mart_r
Many thanks for your reply! I had devised a...

Many thanks for your reply!

I had devised a scheme some years ago to compare how prolific the generalized repunits are w.r.t. the values of p, by taking a sum

[$]s_r:=\sum_{q=7,\,q\,prime}^x...
Forum: Other Mathematical Topics 2022-07-12, 21:37
Replies: 7
Views: 1,048
Posted By mart_r
I keep up until I hit a raw nerve

Follow-up question:

Is there a similar measure for the numbers of the form 2kp+1 yielding a lot of composites, in which case the generalized repunits (b^p-1)/(b-1) would produce an above-average...
Forum: Other Mathematical Topics 2022-06-27, 15:09
Replies: 7
Views: 1,048
Posted By mart_r
Hardy-Littlewood constants for quadratic polynomials

The polynomial x2+x+a with integer x and odd integer a has a certain density of prime numbers which can be measured by an associated Hardy-Littlewood constant, HL(x2+x+a).
Example: HL(x2+x+1) =...
Showing results 1 to 5 of 5

 
All times are UTC. The time now is 04:23.


Fri Sep 30 04:23:09 UTC 2022 up 43 days, 1:51, 0 users, load averages: 0.91, 1.20, 1.30

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔