22 is a composite number with four factors, which means two rectangles.
One.
Prime numbers have one factor pair, hence one rectangle.
No 5291 is not a prime using 2 numbers. It is a prime using three numbers.
41 is a prime number.
47 is a prime number.
11 is a prime number.
None. 887 is a prime number.
NA: 13 is a prime number.
No prime power exists since there are no duplicate prime numbers in the prime factorization.
To prove that 61 is a prime number.
No, never.
19 is a prime number in its own right and needs no exponents