List questions from square-numbers

Published on 29 Mar 2026 - 3:52

86

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For squarefree $i$ what is $\sum_1^{n} \frac{1}{i}$?

Published on 22 Aug 2013 - 0:30

5k

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Prime Numbers And Perfect Squares

Published on 29 Aug 2013 - 6:13

616

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All Sufficiently Large Squares, Represented as Sum of Two Semiprimes

Published on 23 Feb 2026 - 8:25

22.2k

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IMO 1988, problem 6

Published on 29 Mar 2026 - 22:13

60

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Are all the square roots of non-square numbers surds?

Published on 09 Sep 2013 - 17:08

931

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All elements in $\mathbb{Z}/n\mathbb{Z}$ are representable as sum of a square and a cube?

Published on 29 Mar 2026 - 3:53

75

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Given $D$, find $K$ such that $(D+1) + DK$ and $K+1$ are perfect squares

Published on 13 Sep 2013 - 15:29

76

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Prove that the number $6n+2$ is not a square for any integer $n$

Published on 28 Sep 2013 - 13:32

155

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Infinitely many squares in a sequence.

Published on 29 Sep 2013 - 6:08

8k

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Calculating a SQRT digit-by-digit?

Published on 30 Mar 2026 - 4:01

706

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Science Fair Project - Square roots

Published on 14 Oct 2013 - 20:10

7.5k

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Simple algorithm to get the square of an integer using only addition?

Published on 23 Oct 2013 - 20:17

8.5k

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What is a perfect square in mod n

Published on 24 Oct 2013 - 10:42

123

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3-D function that follows an inverse square law, but has an overall integral equal to a constant

Published on 25 Oct 2013 - 16:02

List Question

$ \exists a, b \in \mathbb{Z} $ such that $ a^2 + b^2 = 5^k $

For squarefree $i$ what is $\sum_1^{n} \frac{1}{i}$?

Prime Numbers And Perfect Squares

All Sufficiently Large Squares, Represented as Sum of Two Semiprimes

IMO 1988, problem 6

Are all the square roots of non-square numbers surds?

All elements in $\mathbb{Z}/n\mathbb{Z}$ are representable as sum of a square and a cube?

Given $D$, find $K$ such that $(D+1) + DK$ and $K+1$ are perfect squares

Prove that the number $6n+2$ is not a square for any integer $n$

Infinitely many squares in a sequence.

Calculating a SQRT digit-by-digit?

Science Fair Project - Square roots

Simple algorithm to get the square of an integer using only addition?

What is a perfect square in mod n

3-D function that follows an inverse square law, but has an overall integral equal to a constant

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