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user142929
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55 Offered bounties for 3,400 reputation

Active Offered Earned
0 votes
1 answer
267 views
+100

Mathematical characterization of gravitational geons as reference request, and their properties as main question

0 votes
2 answers
276 views
+50

Primes and chirality: a definition and question in the context of tessellations for squares

2 votes
1 answer
337 views
+50

A conjecture concerning the equation $\sigma\left(\square\right)=\text{prime}$

3 votes
1 answer
200 views
+50

A diophantine equation inspired in a conjecture due to Gica and Luca, example of a large Mersenne exponent

4 votes
1 answer
542 views
+50

Novel examples, proofs or results in mathematics from arithmetic billiards

0 votes
1 answer
189 views
+50

Conjectures inspired in the context of Casas-Alvero conjecture, via the logarithmic derivative of derivatives of a polynomial

3 votes
0 answers
144 views
+50

On an inequality for the arithmetic function counting the number of primes $\lfloor n^c\rfloor$ in the spirit of Ramanujan's prime counting inequality

4 votes
2 answers
594 views
+100

What work can be done to study the solutions of $\varphi\left(x^{\sigma(x)}\sigma(x)^x\right)=2^{x-1} x^{3x-1}\varphi(x)$?

1 vote
0 answers
294 views
+50

About inequalities that involve the sum of divisors, the Euler's totient and the aliquot part $\sigma(n)-n$

0 votes
1 answer
470 views
+50

New experiments involving Ramanujan primes: Benford's law

3 votes
0 answers
271 views
+50

Catalan numbers, Pochhammer symbols, Stirling numbers of the second kind, and sums of aliquot parts

3 votes
1 answer
364 views
+50

Odd perfect numbers having as prime factors exclusively Mersenne primes and Fermat primes

7 votes
1 answer
731 views
+50

Generalization of a problem, involving radicals and the floor function, proposed by Ramanujan to the Journal of the Indian Mathematical Society

1 vote
1 answer
280 views
+50

How many persons pass your 1.5 meter neighbourhood during 1 week ? If the distribution is power law what is the exponent?

8 votes
0 answers
339 views
+50

A generalization of Feit–Thompson conjecture, for square-free integers

2 votes
1 answer
397 views
+100

On weaker forms of the abc conjecture from the theory of Hölder and logarithmic means

2 votes
0 answers
74 views
+50

Least number of factors $\sigma(p^e)$ of representation of $\sigma(N)$ to get the least multiple of $\operatorname{rad}(N)$, for odd perfect numbers

5 votes
0 answers
338 views
+50

On a conjecture about the arithmetic function that counts the number of twin primes

2 votes
0 answers
108 views
+50

On variations of a claim due to Kaneko in terms of Lehmer means

3 votes
0 answers
192 views
+50

Irrationality or transcendence of $i^{i\Omega}$ and $2^\Omega$, with $\Omega=W(1)$ and $W(x)$ being the main branch of Lambert $W$ function

2 votes
0 answers
165 views
+50

What about series involving strong primes?

2 votes
1 answer
397 views
+50

On weaker forms of the abc conjecture from the theory of Hölder and logarithmic means

2 votes
2 answers
267 views
+50

On values of $n\geq 1$ satisfying that for all primorial $N_k$ less than $n$ the difference $n-N_k$ is a prime number

14 votes
8 answers
3k views
+100

Relevant mathematics to the recent coronavirus outbreak

1 vote
0 answers
84 views
+50

Asymptotic behaviour of $\sum_{k=1}^{n}\frac{R_{k+1}+R_k}{R_{k+1}-R_k}$, where $R_k$ are the Ramanujan primes

8 votes
2 answers
535 views
+50

Around the diophantine equation $\frac{a}{2b+3c}+\frac{b}{2c+3a}+\frac{c}{2a+3b}=\text{odd integer}$, over positive integers

0 votes
0 answers
104 views
+50

Variants of Nicholson's inequalities for prime numbers, involving the Lambert $W$ function

7 votes
1 answer
221 views
+100

The asymptotic of $|\{1\leq n\leq x|\gcd(n,S(n))=1\}|$, with $S(n)$ the sum of remainders, and get idea for other miscellany problem

3 votes
1 answer
338 views
+50

Is there a clear criterion or rule about when one can use the heuristic given by Cramér random model for prime numbers?

-3 votes
1 answer
258 views
+50

A Bonse's inequality for semiprimes, with a good mathematical content

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