Question

An approximation for $1\leq n\leq N$ of the number of solutions of $2^{\pi(n)}\equiv 1\text{ mod }n$, where $\pi(x)$ is the prime-counting function

score 225 · Answer 1 · 2026-05-10 14:49:17

225

Views

An approximation for $1\leq n\leq N$ of the number of solutions of $2^{\pi(n)}\equiv 1\text{ mod }n$, where $\pi(x)$ is the prime-counting function

Published on 10 May 2026 - 14:49

score 60 · Answer 2 · 2026-04-15 12:40:01

60

Views

To find positive integers from $Z_8$

Published on 15 Apr 2026 - 12:40

score 116 · Answer 3 · 2026-04-16 13:13:16

116

Views

To find the smallest integer greater than $23$ with certain modular residues

Published on 16 Apr 2026 - 13:13

score 21 · Answer 4 · 2026-04-16 13:24:42

21

Views

Is this an equivalent definition of the notation $f(x) \equiv g(x) \hspace{4mm} ( \text{mod} \hspace{2mm} h(x), \hspace{1mm} n )$?

Published on 16 Apr 2026 - 13:24

score 349 · Answer 5 · 2026-04-29 12:48:43

349

Views

If $5x \equiv 15 \pmod{25}$, then definitely $x \equiv 3 \pmod{25}$. Is this true or false?

Published on 29 Apr 2026 - 12:48

score 145 · Answer 6 · 2026-04-09 15:21:36

145

Views

Elementary Number Theory: Cubic Congruences

Published on 09 Apr 2026 - 15:21

score 42 · Answer 7 · 2026-04-16 20:57:30

42

Views

Reference request: "If $a$ and $m$ are coprime then there must exist $k \in \mathbb{N}$ such that $a^k \equiv 1 \pmod m$"

Published on 16 Apr 2026 - 20:57

score 30 · Answer 8 · 2026-04-09 16:08:39

30

Views

Expand powers and simplify the coefficient

Published on 09 Apr 2026 - 16:08

score 144 · Answer 9 · 2026-05-04 03:55:51

144

Views

How many operations are required to check the congruence $(x+a)^n \equiv x^n + a \pmod{x^r-1, n}$?

Published on 04 May 2026 - 3:55

score 353 · Answer 10 · 2026-04-11 19:45:26

353

Views

Congruent Squares Question using algebra

Published on 11 Apr 2026 - 19:45

score 64 · Answer 11 · 2026-04-12 20:54:25

64

Views

Elementary Number Theory: Solving a Congruence Equation

Published on 12 Apr 2026 - 20:54

score 34 · Answer 12 · 2026-04-13 17:59:53

34

Views

Distinct equivalence classes of the relation $R$ defined on $\mathbb Z$ defined by $mRn$ if $5 \mid m^3 - n^3$

Published on 13 Apr 2026 - 17:59

score 63 · Answer 13 · 2026-04-29 12:26:01

63

Views

Congruence relation

Published on 29 Apr 2026 - 12:26

score 51 · Answer 14 · 2026-04-15 20:13:01

51

Views

If $p\equiv 2 \pmod{3}$ evaluate :

Published on 15 Apr 2026 - 20:13

score 46 · Answer 15 · 2026-04-30 08:24:25

46

Views

General pattern for a sequence

Published on 30 Apr 2026 - 8:24

List Question

An approximation for $1\leq n\leq N$ of the number of solutions of $2^{\pi(n)}\equiv 1\text{ mod }n$, where $\pi(x)$ is the prime-counting function

To find positive integers from $Z_8$

To find the smallest integer greater than $23$ with certain modular residues

Is this an equivalent definition of the notation $f(x) \equiv g(x) \hspace{4mm} ( \text{mod} \hspace{2mm} h(x), \hspace{1mm} n )$?

If $5x \equiv 15 \pmod{25}$, then definitely $x \equiv 3 \pmod{25}$. Is this true or false?

Elementary Number Theory: Cubic Congruences

Reference request: "If $a$ and $m$ are coprime then there must exist $k \in \mathbb{N}$ such that $a^k \equiv 1 \pmod m$"

Expand powers and simplify the coefficient

How many operations are required to check the congruence $(x+a)^n \equiv x^n + a \pmod{x^r-1, n}$?

Congruent Squares Question using algebra

Elementary Number Theory: Solving a Congruence Equation

Distinct equivalence classes of the relation $R$ defined on $\mathbb Z$ defined by $mRn$ if $5 \mid m^3 - n^3$

Congruence relation

If $p\equiv 2 \pmod{3}$ evaluate :

General pattern for a sequence

Trending Questions

Popular # Hahtags

Popular Questions