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'Hold on there, Mr. Webster. 1677 isn't prime - it's divisible by 43.'
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1541x1949 (unwatermarked)
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'Two, three, five, seven...all the prime numbers there are.'
2655x2013 (unwatermarked)
'Mathematician's Rap.'
2196x2958 (unwatermarked)
'Discover any prime numbers recently?'
1832x1747 (unwatermarked)
"Is that your interpretation of primorial, Jim?"
1452x1800 (unwatermarked)