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Thread / Thread Starter	Last Post	Replies	Views
Sticky: Proposal for new subforum ( 1 2 3 4 5) ewmayer	2005-10-10 23:25 by ewmayer	49	29,692
Amazing pattern with -12 (was -3) ( 1 2 3 4) paulunderwood	2023-01-30 00:05 by paulunderwood	40	2,830
Formula for the term S_p-2 in Lucas-Lehmer primality test ( 1 2 3) User140242	2023-01-23 19:40 by User140242	24	1,555
Is division by zero theoretically possible? ( 1 2 3) MPrimeFinder	2023-01-23 01:10 by kruoli	23	790
Some heuristic of Mersenne primes exponent RMLabrador	2023-01-18 20:02 by RMLabrador	4	208
Search for programmers ( 1 2 3) SergeyT	2023-01-16 16:18 by Uncwilly	27	1,128
Mersenne exponents of the form 8k+7 kijinSeija	2023-01-14 15:35 by Dr Sardonicus	7	912
Mp mod D ( 1 2 3) User140242	2023-01-11 20:20 by User140242	32	3,761
Getting others to do the work on exponents I like (was: Trial Factoring Progress) ( 1 2 3 4 5 ... Last Page) tuckerkao	2023-01-06 09:53 by RMLabrador	678	115,567
Collatz conjecture ( 1 2) RMLabrador	2022-12-26 18:58 by RMLabrador	12	2,763
potential new algorithm for factoring semiprimes that are 5 mod 6 IamMusavaRibica	2022-12-22 00:14 by SethTro	1	362
Solution(s) of consecutive primes' product=the next prime*2^k-1 SuikaPredator	2022-12-21 14:37 by SuikaPredator	4	661
Are all perfect numbers expressible as a square plus a prime? ( 1 2) kriesel	2022-12-16 17:15 by kriesel	18	1,172
new formula for prime numbers? Harklo73	2022-11-19 19:35 by Harklo73	8	658
The Cube Sun of Minecraft, and the math behind them RMLabrador	2022-11-14 20:06 by chalsall	4	340
Another failing 1-liner jnml	2022-11-14 07:24 by jnml	5	304
I discovered important notion about prime numbers ZoozFX	2022-11-10 23:22 by kriesel	3	408
A new claimed proof of the twin prime conjecture ixfd64	2022-10-31 20:18 by Dr Sardonicus	3	699
Pell's equation Jombo G	2022-10-28 03:13 by sweety439	4	573
[Not a] Disproof of the Riemann hypothesis ( 1 2) Tatenda	2022-10-22 14:33 by Dr Sardonicus	20	3,294
x^2+x+1 jnml	2022-10-22 07:58 by jnml	8	717
Poll: Is _that_ a proof of the strong (binary) Goldbach conjecture Tatenda	2022-10-20 16:22 by Batalov	7	790
Mersenne prime exponents that are also Sophie Germain primes carpetpool	2022-10-19 01:44 by sweety439	5	1,321
6-line proof of the binary Goldbach conjecture for even integers congruent to 2 mod 4. Tatenda	2022-10-16 21:12 by Tatenda	2	560
Fun with quadratic discriminant paulunderwood	2022-10-15 00:19 by paulunderwood	2	598
Perrin Pseudoprime factoring challenge paulunderwood	2022-10-13 20:02 by paulunderwood	3	930

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≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ 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