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Sticky: Proposal for new subforum ( 1 2 3 4 5) ewmayer	2005-10-10 23:25 by ewmayer	49	27,122
Pseudo Fact - Last Digits of Mersenne Primes Graph2022	2022-05-21 13:58 by Dr Sardonicus	8	504
Getting others to do the work on exponents I like (was: Trial Factoring Progress) ( 1 2 3 4 5 ... Last Page) tuckerkao	2022-05-14 17:42 by kriesel	557	64,922
Does it sound random? - Regards Perfect numbers ( 1 2) Graph2022	2022-05-06 15:06 by Dr Sardonicus	11	534
Presentation and doubts with the application and competition of 100000000 prime digits ( 1 2 3) apzyx	2022-05-06 13:40 by Dr Sardonicus	29	1,048
ONCE AGAIN: a seemingly fresh proof of the Twin Prime Conjecture.... NOT rudy235	2022-05-03 02:52 by Dr Sardonicus	4	151
Primes p such that p^2+p+1=q is prime, and p is largest prime factor of q^3-1 Stargate38	2022-04-18 14:22 by Dr Sardonicus	2	427
Beal's conjecture ..........not ( 1 2) Awojobi	2022-04-12 04:56 by sweety439	14	989
OEIS Goldbach sequences ATH	2022-04-09 20:14 by ATH	0	171
visualisations of primes / cycle representations bhelmes	2022-04-03 14:07 by Dr Sardonicus	2	467
mod x^4+1 ( 1 2 3) paulunderwood	2022-03-23 13:01 by Dr Sardonicus	26	1,504
On the density of Euler’s Phi function of the sets of numbers in form of p+/-n and their relation to MarcinLesniak	2022-03-23 10:17 by MarcinLesniak	0	136
Cheap sieve primes hub birtwistlecaleb	2022-03-19 21:53 by birtwistlecaleb	10	320
Prime next to multiple of 6 ( 1 2) jovada	2022-03-13 18:18 by Dobri	13	1,161
Strengthening Damg ̊ard and Frandsen, and Khashin paulunderwood	2022-03-11 15:54 by paulunderwood	0	143
Pattern in composite palindrome numbers hunson	2022-02-23 19:26 by hunson	9	974
Miscellany log-series question mart_r	2022-02-22 20:56 by mart_r	4	466
The N-Queens Puzzle Godzilla	2022-02-21 18:06 by Godzilla	0	284
Take a look at the dial clock powolny17	2022-02-19 22:50 by powolny17	0	208
my theory on the search for primes - Sorry ( 1 2) claugoru	2022-02-18 13:34 by Dr Sardonicus	12	833
Search prime numbers by dimension claugoru	2022-02-13 17:46 by xilman	7	355
Divertimento -- Four Lucas Tests ( 1 2 3 4) paulunderwood	2022-02-05 06:26 by paulunderwood	34	4,909
"Not Mersenne" formula ( 1 2) Mikloska	2022-02-01 17:30 by Batalov	19	1,155
Need an assessment and help regarding prime numbers. ( 1 2) TimoKinnunen	2022-01-30 06:30 by LaurV	11	1,275
Prime 997 revisited. ( 1 2) Blackadder	2022-01-30 04:48 by LaurV	17	1,043
a factorisation algorithm with help of quadratic polynomials ( 1 2) bhelmes	2022-01-26 02:12 by bhelmes	19	3,636

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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