Rectangular numbers are numbers that can be represented as a rectangle with a whole number of rows and columns. In this case, the rectangular numbers between 11 and 17 are 12 and 16. The number 12 can be represented as a 3x4 rectangle, and the number 16 can be represented as a 4x4 square.
The prime numbers and the squares of primes between 2 and 20: 3, 4, 5, 7, 9, 11, 13, 17 and 19.
11 13 17
The prime numbers between 10 and 20 are 11, 13, 17, and 19.
The prime numbers from 1 to 17 are 2, 3, 5, 7, 11, 13, and 17.
Rectangular numbers are numbers that can be represented as a rectangle with a whole number of rows and columns. In this case, the rectangular numbers between 11 and 17 are 12 and 16. The number 12 can be represented as a 3x4 rectangle, and the number 16 can be represented as a 4x4 square.
Well, honey, none of the numbers between 3 and 11 are rectangular. Rectangular numbers are the product of two consecutive integers, like 6 (2x3) or 12 (3x4). So, in this case, you're out of luck if you're looking for rectangular numbers between 3 and 11.
The prime numbers and the squares of primes between 2 and 20: 3, 4, 5, 7, 9, 11, 13, 17 and 19.
57
1, 2, 3, 4, 5, 7, 11, 13, 17, 19. (I think)
11 13 17
Both 11 and 17 are prime numbers.
ALL of the numbers between 1 and 100 are rectangular numbers, except for 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97.
11, 13, 17, and 19
4, 6, 8, 9, 19
Rectangular numbers are a subset of composite numbers. The squares of prime numbers will be composite but not rectangular.
17 and 11 are prime numbers; the product of 17 and 11 is not.