1111411141

This number is a prime.

Just showing those entries submitted by 'Bajpai': (Click here to show all)

+ 1+1+1+1+4+1+1+1+4+1 = 1*1*1*1*4*1*1*1*4*1 = 16. The smallest example of a ten-digit prime with this property. [Bajpai]

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