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|Here, '''n''' equals 144

|Here, '''n''' equals 100

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To construct a table of all prime numbers less than ''n'', you can use a method called the [[Sieve of Eratosthenes]].  Simply write down an ordered list of all counting numbers from 1 to ''n''.  Beginning with 2*2 = 4, cross out every second number:

To construct a table of all prime numbers less than ''n'', you can use a method called the [[Sieve of Eratosthenes]].  Simply write down an ordered list of all counting numbers from 1 to ''n''.  Beginning with 2*2 = 4, cross out every second number: