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10 December, 10:19

why is there no need to go further than the multiples of 7 when checking if a number less than 100 is prime

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  1. 10 December, 10:48
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    Step-by-step explanation:

    because 7 is the highest prime number that when squared is less than 100, 11 yhe next prime number when squared is 121. As such all non-prime numbers less than 100 will be a would have prime factors of either 2, 3, 5 & 7
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