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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	29,703
Is there a form of primes similar to primorials but with the sum of primes? hunson	2023-02-05 22:04 by chalsall	6	50
M77232917 RMLabrador	2023-02-05 21:02 by mart_r	7	200
Trouble With Comparisons at the Store ( 1 2) EdH	2023-02-04 14:25 by xilman	20	588
Sieving vs. trial factoring bur	2023-02-04 06:58 by bur	0	72
Amazing pattern with -12 (was -3) ( 1 2 3 4) paulunderwood	2023-01-30 00:05 by paulunderwood	40	3,098
Formula for the term S_p-2 in Lucas-Lehmer primality test ( 1 2 3) User140242	2023-01-23 19:40 by User140242	24	1,669
Is division by zero theoretically possible? ( 1 2 3) MPrimeFinder	2023-01-23 01:10 by kruoli	23	831
Some heuristic of Mersenne primes exponent RMLabrador	2023-01-18 20:02 by RMLabrador	4	227
Search for programmers ( 1 2 3) SergeyT	2023-01-16 16:18 by Uncwilly	27	1,273
Mersenne exponents of the form 8k+7 kijinSeija	2023-01-14 15:35 by Dr Sardonicus	7	1,033
Mp mod D ( 1 2 3) User140242	2023-01-11 20:20 by User140242	32	3,804
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	118,413
Collatz conjecture ( 1 2) RMLabrador	2022-12-26 18:58 by RMLabrador	12	2,803
potential new algorithm for factoring semiprimes that are 5 mod 6 IamMusavaRibica	2022-12-22 00:14 by SethTro	1	378
Solution(s) of consecutive primes' product=the next prime*2^k-1 SuikaPredator	2022-12-21 14:37 by SuikaPredator	4	698
Are all perfect numbers expressible as a square plus a prime? ( 1 2) kriesel	2022-12-16 17:15 by kriesel	18	1,254
new formula for prime numbers? Harklo73	2022-11-19 19:35 by Harklo73	8	678
The Cube Sun of Minecraft, and the math behind them RMLabrador	2022-11-14 20:06 by chalsall	4	352
Another failing 1-liner jnml	2022-11-14 07:24 by jnml	5	317
I discovered important notion about prime numbers ZoozFX	2022-11-10 23:22 by kriesel	3	422
A new claimed proof of the twin prime conjecture ixfd64	2022-10-31 20:18 by Dr Sardonicus	3	717
Pell's equation Jombo G	2022-10-28 03:13 by sweety439	4	582
[Not a] Disproof of the Riemann hypothesis ( 1 2) Tatenda	2022-10-22 14:33 by Dr Sardonicus	20	3,350
x^2+x+1 jnml	2022-10-22 07:58 by jnml	8	728
Poll: Is _that_ a proof of the strong (binary) Goldbach conjecture Tatenda	2022-10-20 16:22 by Batalov	7	799

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∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 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