👉 The term "indivisibility" in mathematics refers to a property that ensures two or more numbers are equal. This means they have no common factors, which is why when you divide one number by another, it will always result in an integer (a whole number) without any decimal places. For example, 12 and 8 are indivisible because their greatest common factor (GCF) is 4, meaning that 12 divided by 8 equals 1 with no remainder