what do you call the numbers that cannot be arranged into 2 row arrays?
The numbers that cannot be arranged into 2 row arrays are called prime numbers. Prime numbers are positive integers greater than 1 that are divisible only by 1 and themselves. To identify prime numbers, you can follow these steps:
1. Start with an integer greater than 1.
2. Determine if the number is divisible by any integer greater than 1 and less than itself.
3. If the number is divisible by any other number, it is not prime.
4. If the number is not divisible by any other number, it is prime.
For example, let's consider the number 7:
1. Starting with 7.
2. Check divisibility by integers greater than 1 and less than 7 (2, 3, 4, 5, 6).
3. No integers divide 7 evenly.
4. Therefore, 7 is a prime number.
Some other examples of prime numbers include 2, 3, 5, 11, 13, 17, and so on.