What is a "Diophantine number"?
123341
Diophantine number has full measure but is meager
123296
Determine whether a number is prime
57654
Congruent Modulo $n$: definition
119433
How to find modulo of large numbers like $9801\! \pmod {\!32}$
121273
For any prime number $p$, let $A_p$ be the set of integers $d\in \{1,2,\dots, 999\}$ s. Then what is the cardinality of $A_p$?
75516
Relatively Prime Numbers and Number of Divisors of n
147562
Sum of squares diophantine equation
6160
How to prove a number $a$ is quadratic residue modulo $n$?
30478
How to prove that a number is irrational
47001
Cubic diophantine equation
8160
What is $\gcd(0,a)$, where $a$ is a positive integer?
59091
A quartic diophantine equation
35837
How to prove that any (integer)$^{1/n}$ that isn't an integer, is irrational?
66216
Squares, Cubes and Prime numbers
24706
Is there a rational number between any two irrationals?
155112
Are there more rational numbers than integers?
4946
Non-existence of irrational numbers?