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Thread / Thread Starter	Last Post	Replies	Views
Some other conjectures sweety439	2022-05-19 06:43 by sweety439	5	2,432
A Sierpinski/Riesel-like problem ( 1 2 3 4 5 ... Last Page) sweety439	2022-05-19 00:30 by sweety439	1,267	99,692
xddd ( 1 2 3 4 5 ... Last Page) sweety439	2022-05-17 19:38 by sweety439	413	33,322
Add repeated digits after a number until it is prime ( 1 2 3 4 5 ... Last Page) sweety439	2022-05-17 19:28 by sweety439	74	17,014
(conjectured or proved) finite-record sequences sweety439	2022-05-14 13:36 by sweety439	3	269
Website for factorization of Phi(n,2) ( 1 2) sweety439	2022-05-13 21:23 by sweety439	13	951
Curious of generalized repunit primes sweety439	2022-05-12 23:20 by sweety439	1	84
Minimal set of the strings for primes with at least two digits ( 1 2 3 4 5 ... Last Page) sweety439	2022-05-12 12:59 by sweety439	329	40,744
Off-topic ( 1 2 3) sweety439	2022-05-11 07:45 by LaurV	25	1,465
Yet another trivial "do this" sweety439	2022-05-07 11:13 by Batalov	4	138
New floating-point arithmetic sweety439	2022-04-30 04:48 by retina	6	245
n kinds of "base n" representations sweety439	2022-04-28 05:12 by sweety439	0	104
generalized minimal (probable) primes ( 1 2 3 4 5 ... Last Page) sweety439	2022-04-23 20:44 by sweety439	139	22,540
New hyperoperation and new Recaman sequence sweety439	2022-04-23 16:10 by sweety439	0	76
A question about twin primes and twin practical numbers sweety439	2022-04-23 14:32 by sweety439	1	85
can ECM found all factors? sweety439	2022-04-22 15:40 by Dr Sardonicus	4	221
OEIS sequence that can be extended sweety439	2022-04-16 23:55 by VBCurtis	6	212
k<10000 sweety439	2022-04-10 06:31 by sweety439	0	76
Can someone help me to check whether this prime is the smallest prime factor of (2^653+17)/7? sweety439	2022-04-05 14:13 by Uncwilly	5	293
432 sweety439	2022-03-30 23:14 by sweety439	0	109
Two prime-related conjectures ( 1 2) sweety439	2022-03-14 10:31 by sweety439	19	1,714
Special modules sweety439	2022-03-13 07:51 by sweety439	0	147
Unsolved problems about primes and number theory collect sweety439	2022-03-11 23:25 by sweety439	1	829
Primes of the form (b+-1)*b^n+-1 and b^n+-(b+-1) ( 1 2 3 4 5 ... Last Page) sweety439	2022-03-06 16:19 by sweety439	164	24,718
Some special factorization status of generalized repunits sweety439	2022-02-13 22:52 by sweety439	1	2,089

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∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ 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