KwickClips Python · 39 sec · free
Is 1 a prime number?
Short answer. No, because it has only one factor.
What does the inner loop do?
It tests each possible divisor of the number.
Remember
| Prime: exactly two factors |
| A loop counts the factors |
Is one a prime number? No. Try every number from one to seven. Count how many divide seven exactly. Only one and seven do. Two factors means seven is prime. Remember two things. A prime has exactly two factors. A loop counts them.
This clip is from the full lesson: Nested Loops and Pattern Programs — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Artificial Intelligence (417), CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), ICSE Class 10 Computer Applications
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