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Number Theory Proposed & Own Problems

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Home » Olympiad Section » Number Theory » Number Theory Proposed & Own Problems

3754 Topics • Page 1 of 76 • 1, 2, 3, ..., 74, 75, 76 Next

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		Zero tolerance Common sense! (enough is enough)	ZetaX	0	1953	Tue Feb 27, 2007 7:12 am ZetaX

Topics		Author	Replies	Views	Last Post
	logical prove for division algorithm	rationalist	1	39	Today, at 11:13 am pleurestique
	Mapping f with $\gcd(f(a),f(b))=\gcd(a,b)$	pmvald	2	68	Yesterday, at 10:18 pm pmvald
	p divides sigma(p-1) Oliforum math contest, problem 1	bboypa	3	677	Yesterday, at 4:40 am iceberg
	Divisibility in a recurrent relation	silouan	0	59	Yesterday, at 1:40 am silouan
	one to one Correspondence	stvs_f	8	118	Mon Nov 30, 2009 11:46 am pco
	trigonometric equation	Ulanbek_Kyzylorda KTL	3	54	Mon Nov 30, 2009 10:51 am pco
	Find the gcd of all such possible products Nice sum!	srinath.r	4	203	Mon Nov 30, 2009 8:16 am gouthamphilomath
	Existence of m,n	Mashimaru	3	105	Mon Nov 30, 2009 3:24 am pco
	Prove that the given number can be expressed as product ... Regional Mathematical Olympiad (RMO-India- 3rd Problem)	srinath.r	2	83	Sun Nov 29, 2009 9:20 pm gouthamphilomath
	Prove that there is no integer -divisibilty 289 Regional Mathematical Olympiad (RMO-India- 2009- 2nd problem) .......very very very easy	srinath.r	2	88	Sun Nov 29, 2009 9:19 pm gouthamphilomath
	exactly 2000 prime divisors IMO 2000, Problem 5, IMO Shortlist 2000, Problem N3	Valentin Vornicu	9	2921	Sun Nov 29, 2009 1:06 pm L-b
	numbers uniquely determined by other numbers	zip111	1	85	Sun Nov 29, 2009 10:29 am Mashimaru
	\frac{a^2+b^2+c^2}{3(ab+bc+ca)} isn't an integer 'don't know the source	shoki	2	160	Sun Nov 29, 2009 9:47 am Mashimaru
	there exists p \| m^\phi(n)-1 but p \nmid n a well-know problem (and easy) but i didn't find it	shoki	3	128	Sun Nov 29, 2009 9:47 am Mashimaru
	A nice problem concerning sum and product	cycoo	3	84	Sun Nov 29, 2009 8:44 am pco
	nice problem	aadil	8	258	Sun Nov 29, 2009 7:12 am Johan Gunardi
	find all nonzero subsets. Romanian JBTST IV 2007, problem 1	pohoatza	6	1027	Sun Nov 29, 2009 6:21 am earldbest
	Find all n in N s.t 121\|n^10-1	ozgurkircak	2	86	Sun Nov 29, 2009 2:32 am ozgurkircak
	attainable numbers !	mohammad-mahmoodi	1	87	Sat Nov 28, 2009 9:02 pm ElChapin
	121 \| n^10-1	ozgurkircak	3	106	Sat Nov 28, 2009 3:02 am Johan Gunardi
	IMO ShortList 2008, Number Theory problem 1 IMO ShortList 2008, Number Theory problem 1	April	6	1333	Sat Nov 28, 2009 2:47 am x164
	PI as a expansion in prime numbers positional system	EulerIntegral	1	60	Fri Nov 27, 2009 5:14 pm ZetaX
	4kxy-1 doesn't divide x^m+y^n (easy and maybe useful) 'don't know the source;sorry if it has been posted before	shoki	0	74	Fri Nov 27, 2009 8:07 am shoki
	Right-angled	SAPOSTO	3	71	Fri Nov 27, 2009 7:20 am shoki
	nt slv95	Ulanbek_Kyzylorda KTL	2	69	Fri Nov 27, 2009 5:51 am ZetaX
	equation easy	stvs_f	1	136	Wed Nov 25, 2009 9:37 am mszew
	Interesting equation	mathVNpro	3	160	Wed Nov 25, 2009 7:12 am phymax
	Sum of the Prime Factors	pmvald	2	116	Wed Nov 25, 2009 1:16 am pmvald
	it is greater than 2009 Indonesia TST 2009 Second Stage Test 4 P2	Raja Oktovin	1	276	Tue Nov 24, 2009 9:35 pm bboypa
	inequality Indonesia IMO 2007 TST, Stage 2, Test 2, Problem 3	Raja Oktovin	3	226	Tue Nov 24, 2009 10:00 am pleurestique
	Find k,m,n	mathVNpro	6	146	Tue Nov 24, 2009 4:34 am shoki
	triangles with rational elements	mehmetcantu	3	115	Tue Nov 24, 2009 3:38 am shoki
	The denominator of the Bernoulli numbers Clausen von Staudt	ZetaX	1	498	Tue Nov 24, 2009 3:14 am ZetaX
	a Diophantine Equation	ozgurkircak	3	128	Mon Nov 23, 2009 2:17 am MeKnowsNothing
	n^{11}-n\|11	Obel1x	4	142	Sun Nov 22, 2009 1:34 pm FelixD
	E_p(m)!!	Obel1x	3	91	Sun Nov 22, 2009 1:34 pm pco
	Improvement of Euler phi theorem my own	bakerbakura	1	102	Sat Nov 21, 2009 7:22 pm pleurestique
	Prime divisor find a,n	Victory.US	1	97	Fri Nov 20, 2009 7:25 am shoki
	Try to solve this easy problem so easy that your going to laugh(I think)	mathlearner2012	2	130	Fri Nov 20, 2009 3:57 am J.Y.Choi
	Positional Number System with non-Integer Base	EulerIntegral	0	76	Thu Nov 19, 2009 9:44 pm EulerIntegral
	x^3 + 2x + 1 = 2^n Serbian Mathematical Olympiad 2007	N.T.TUAN	18	3854	Thu Nov 19, 2009 9:13 pm pco
	Fermats last theorem for n=3	darkside102	7	345	Wed Nov 18, 2009 10:16 pm srinath.r
	S(n)^3=S(n^3)	hophinhan	4	174	Wed Nov 18, 2009 9:36 am pco
	same	stvs_f	0	90	Wed Nov 18, 2009 9:12 am stvs_f
	Euler's function meets arithmetical progressions Old Crux	pbornsztein	7	772	Tue Nov 17, 2009 6:47 pm bboypa
	A nice Indian MO problem The second problem of the INMO 2008	manjil	5	721	Mon Nov 16, 2009 11:16 pm mehmetcantu
	Power and divisibility Indonesia Mathematics Olympiad 2008 Day 2 Problem 1	dyd	2	684	Mon Nov 16, 2009 11:05 pm mehmetcantu
	Infinitely many pairs of primes	Mashimaru	1	140	Mon Nov 16, 2009 10:44 am mavropnevma
	IMO LongList 1967, The Democratic Republic Of Germany 4 IMO LongList 1967, The Democratic Republic Of Germany 4	orl	2	944	Mon Nov 16, 2009 1:43 am wierdo2134
	prime nice problem	stvs_f	0	159	Sun Nov 15, 2009 9:37 pm stvs_f
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