User joro

31 votes

Accepted

Why such an interest in studying prime gaps?

answered Mar 20, 2016 at 13:15

30 votes

Important open problems that have already been reduced to a finite but infeasible amount of computation

answered Nov 12, 2012 at 6:31

24 votes

How many integer partitions of a googol (10^100) into at most 60 parts

answered Jul 24, 2011 at 15:37

23 votes

How many cubes are the sum of three positive cubes?

answered Jan 3, 2022 at 12:22

22 votes

Examples of unexpected mathematical images

answered Aug 9, 2014 at 10:52

21 votes

Every prime number > 19 divides one plus the product of two smaller primes?

answered Dec 28, 2011 at 8:40

21 votes

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Does $2^n-n$ have infinitely often a prime divisor greater than $n$?

answered Nov 19, 2016 at 15:14

20 votes

Are the 'semi' trivial zeros of $\zeta(s) \pm \zeta(1-s)$ all on the critical line?

answered Feb 26, 2012 at 8:48

20 votes

Collection of equivalent forms of Riemann Hypothesis

answered Sep 13, 2012 at 12:49

17 votes

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Bitcoin Research

answered Sep 6, 2012 at 10:40

17 votes

zeta(3) in terms of derivatives of zeta at 1/2 and pi

answered May 6, 2013 at 8:22

17 votes

Computer algebra errors

answered Jul 31, 2013 at 15:14

17 votes

Can four integer numbers $x$, $y$, $x-y$, $x+y$ be powerful numbers where $\gcd(x,y)=1$?

answered Jul 3 at 9:58

15 votes

Is there any pattern to the continued fraction of $\sqrt[3]{2}$?

answered Nov 23, 2015 at 15:42

15 votes

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Floors of powers of reals, how much do the first few determine the next?

answered Jan 6, 2014 at 12:03

14 votes

Diophantine equation $2(x - 1/x) = y - 1/y$

answered Sep 30, 2011 at 12:50

13 votes

Is every distance-regular graph vertex-transitive?

answered Sep 7, 2012 at 11:52

12 votes

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Is this graph 3-colorable?

answered Jan 1, 2016 at 11:17

11 votes

Efficient computation of integer representation as a sum of three squares

answered Aug 9, 2012 at 7:24

11 votes

How true are theorems proved by Coq?

answered Jun 15, 2011 at 6:30

11 votes

Examples of interesting false proofs

answered Apr 25, 2012 at 14:48

11 votes

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An equation involving perfect numbers

answered Jan 26, 2014 at 17:42

11 votes

Derivative of Riemann Zeta at nontrivial zeros

answered Dec 3, 2013 at 14:57

11 votes

Is $n = p-q$ equivalent to Goldbach's Conjecture?

answered Dec 30, 2014 at 11:31

10 votes

Accepted

Are all complex zeros of $\zeta(s) \pm \zeta(-s)$ on the line with $\Re(s)=0$?

answered Jan 26, 2014 at 8:10

10 votes

A weaker version of the ABC conjecture

answered Nov 12, 2012 at 15:13

10 votes

Argument against Vojta's more general abc conjecture

answered Apr 17, 2020 at 8:24

9 votes

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Undecidability of Diophantine equations with disjoint variables?

answered May 30, 2017 at 15:51

9 votes

Accepted

How many cospectral graphs available for a given number of nodes?

answered Jan 12, 2015 at 11:26

9 votes

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Segal's 1999 Stanford lecture notes on TQFT, where to find them?

answered Sep 2, 2015 at 7:55

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291 Answers

Why such an interest in studying prime gaps?

Important open problems that have already been reduced to a finite but infeasible amount of computation

How many integer partitions of a googol (10^100) into at most 60 parts

How many cubes are the sum of three positive cubes?

Examples of unexpected mathematical images

Every prime number > 19 divides one plus the product of two smaller primes?

Does $2^n-n$ have infinitely often a prime divisor greater than $n$?

Are the 'semi' trivial zeros of $\zeta(s) \pm \zeta(1-s)$ all on the critical line?

Collection of equivalent forms of Riemann Hypothesis

Bitcoin Research

zeta(3) in terms of derivatives of zeta at 1/2 and pi

Computer algebra errors

Can four integer numbers $x$, $y$, $x-y$, $x+y$ be powerful numbers where $\gcd(x,y)=1$?

Is there any pattern to the continued fraction of $\sqrt[3]{2}$?

Floors of powers of reals, how much do the first few determine the next?

Diophantine equation $2(x - 1/x) = y - 1/y$

Is every distance-regular graph vertex-transitive?

Is this graph 3-colorable?

Efficient computation of integer representation as a sum of three squares

How true are theorems proved by Coq?

Examples of interesting false proofs

An equation involving perfect numbers

Derivative of Riemann Zeta at nontrivial zeros

Is $n = p-q$ equivalent to Goldbach's Conjecture?

Are all complex zeros of $\zeta(s) \pm \zeta(-s)$ on the line with $\Re(s)=0$?

A weaker version of the ABC conjecture

Argument against Vojta's more general abc conjecture

Undecidability of Diophantine equations with disjoint variables?

How many cospectral graphs available for a given number of nodes?

Segal's 1999 Stanford lecture notes on TQFT, where to find them?