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Is 1 a pri...
Is 1 a prime number?
3 years ago
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2 Replies
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1681 views
Kaia Bins
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2 Answers
Primary Teacher with 15 years teaching experience. 11+ tuition.
A prime number is a positive whole number that is only divisible by 1 and itself. The number 1 is divisible by 1, and it’s divisible by itself. Therefore it is not prime!
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Experienced Maths Teacher (16 yrs) & Examiner for 2 Major Exam Boards
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A positive number that is divisible by itself and 1 is called a prime number.
1 is divisible by itself and 1 and this is where it can get confusing.
I prefer to tell my students 'A prime number is positive number that is divisible by itself and 1 meaning it MUST have only TWO factors'. When you say this fact it is clear 1 is NOT a prime number as it only has 1 factor, i.e 1.
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