Primes whose first and last number is 3: Difference between revisions

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{{Draft task}}


;Task:
;Task:Find primes '''n''' whose first and last number is '''3''', where '''n < 4,000'''
Find primes &nbsp; '''n''' &nbsp; (in base ten) &nbsp; whose first and last decimal digit is &nbsp; '''3''', &nbsp; and where &nbsp; '''n &nbsp; &lt; &nbsp; 4,000'''.


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