Have you ever wondered whether there is a way to determine whether a number is a prime number? Well! for numbers less than 285 follow these steps:

All prime numbers greater than 5 end in 1, 3, 7 or 9 Then

  • For numbers less than 121; if your number is NOT DIVISIBLE by 2, 3, 5 or 7 then it is A PRIME NUMBER.
Based on your number, follow the appropriate path to find out if your number is a prime number or not

  • For numbers between 122 and 288, if your number is NOT DIVISIBLE by 2, 3, 5, 7, 11 or 13 then it is A PRIME NUMBER
Based on your number, follow the appropriate path to find out if your number is a prime number or not

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Nouri Dib

(R&F) Geometry - Parallel Lines (z-angles/f-angles/c-angles)
(R&F) Standard Form Notation / Scientific Notation