
# 6.E: Prime Numbers (Exercises)

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Exercise $$\PageIndex{1}$$:

Are 253 and 257 prime?

Exercise $$\PageIndex{2}$$:

Using prime factorization find the GCD and LCM of 3915 and 825.

Exercise $$\PageIndex{1}$$

Using prime factorization find the GCD and LCM of $$30030$$ and $$165$$.