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97
Is the following identity true?
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91
Can the Poisson summation formula break?
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68
Are the primes normally distributed? Or is this the Riemann hypothesis?
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55
Is it possible to show that $\sum_{n=1}^{\infty} \frac{\mu(n)}{\sqrt{n}}$ diverges?
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54
A family of polynomials whose zeros all lie on the unit circle
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53
A remarkable almost-identity
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42
Prime square offsets: Why is +7 more frequent than -7?
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42
A conjecture regarding prime numbers
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42
Why does the Riemann zeta function have non-trivial zeros?
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38
Primes p=4k+1 such that k!+1 is divisible by p
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37
Cricket and the Hardy-Littlewod maximal function
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37
When is the product $(1+1)(1+4)…(1+n^2)$ a perfect square?
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36
Sets of unit fractions with sum $\leq 1$
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36
Is this equivalent to RH - Riemann hypothesis?
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36
Is there a real nonintegral number $x >1$ such that $\lfloor x^n \rfloor$ is a square integer for all $n \in \mathbb{N}$?
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35
Sum over permutations is 1
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35
How strong is this conjecture? $(Z/nZ)^*$ is generated by "small" elements
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34
Irrationality measure of log(2)/log(6)
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33
Distribution of square roots mod 1
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33
Why does this sequence converges to $\pi$?
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33
When does doubling the size of a set multiply the number of subsets by an integer?
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31
Euler and the Four-Squares Theorem
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29
Is there a Kolmogorov complexity proof of the prime number theorem?
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29
Diophantine equation $3^a+1=3^b+5^c$
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28
Is $\sum_{k=1}^{n} \sin(k^2)$ bounded by a constant $M$?
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28
distribution of $\sqrt{-1} \mod p$
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28
Is there an explicit expression for Chebyshev polynomials modulo $x^r-1$?
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27
What's special about the circle problem?
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27
Distribution of $a^2+\alpha b^2$
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25
Distribution of the Error term in GH Hardy's "curious result" $\sum_{\nu \leq n } \{ \nu \theta \}^2 = \tfrac{1}{12} n + O(1)$
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