So far I know that 120 is a rectangular number
Rectangular numbers are a subset of composite numbers. The squares of prime numbers will be composite but not rectangular.
The second and third rectangular numbers are 6 and 12
Rectangular numbers, also known as oblong numbers, are the products of two consecutive integers. Between 3 and 10, the rectangular numbers are 6 (2×3), 12 (3×4), and 20 (4×5). Thus, the rectangular numbers in that range are 6 and 12.
There is no such formula. Rectangular numbers are composite numbers and there is no known formula that will generate either composite numbers or prime numbers.
rectangular numbers are numbers just displayed in the shape of a rectangle e.g take the number 6 it can be shown as: ** ** or ****** **
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.
In mathematics, a non-rectangular number is often referred to as a "non-rectangular integer" or simply a "non-rectangular shape." However, the term "rectangular number" typically refers to numbers that can be arranged in a rectangular array of dots, such as the product of two integers. Non-rectangular numbers would be those that do not fit this definition, like prime numbers or certain other integers.
Rectangular numbers are of the form n(n+1) for n = 1, 2, 3, 4, 5, 6, ... The first few rectangular numbers are: 2, 6, 12, 20, 30, 42, ...
42
A row of numbers, a column of numbers or a rectangular layout of numbers.
Rectangular numbers, also known as oblong numbers or pronic numbers, are the product of two consecutive integers. The rectangular numbers between 2 and 40 are 6 (2×3), 12 (3×4), 20 (4×5), 30 (5×6), and 42 (6×7). However, since 42 exceeds 40, the rectangular numbers between 2 and 40 are 6, 12, 20, and 30.
101