SOLUTION: What is the smallest prime factor of 1821
Divisibility and Prime Numbers
-> SOLUTION: What is the smallest prime factor of 1821
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Algebra: Divisibility and Prime Numbers
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What is the smallest prime factor of 1821
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You have to try starting with 2,3 ,5 etc
We find that 2 does not divide 1821 and 3 divides 1821..so 3 is the smallest prime factor.