How to Find Prime Numbers? Simple and Easy Methods

Tim Ricchuiti on Instagram: "Prime Numbers Explained: The Case Against 1 When students learn about prime numbers, a pretty common definition is to say that prime numbers are numbers that only have themselves and 1 as factors. This inevitably leads to students to ask: what about 1? 1 only has itself and 1 as factors, it’s just that it happens to be 1 itself. So shouldn’t it be prime? The answer is no, but it’s not necessarily a satisfying no: 1 is not a prime number because mathematicians say it’

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