Why does this property hold for odd integers except for 5?
380
Bijection from modular multiplication?
157954
How many digits does the integer zero have?
52542
For which odd positive integer $n$ , is it true that $-1$ is not a positive power of $2$ modulo $n$?
21903
What is the difference between [0-9]+ and [0-9]++?
36182
Why doesn't the last digit method work for divisibility by 4?
101551
How does long to int cast work in Java?
78351
Why is $(2, 1+\sqrt{-5})$ not principal?
134330
Negative integer division surprising result
116054
The number $(3+\sqrt{5})^n+(3-\sqrt{5})^n$ is an integer
650
Modulus operation with negatives values - weird thing?
6694
Subscript indices must either be real positive integers or logicals?
88308
Why does integer division in C# return an integer and not a float?
105837
XORing consecutive integers has an interesting property. Does anyone know why?
18953
Prove that even + odd is odd.
62399
Why don't languages raise errors on integer overflow by default?
85272
$3x + 1$ is even iff $5x-2$ is odd
77701
Why are there so many types of number in Java when long and double work every time?