One thousand eight hundred thirteen.
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1813 is not prime. It is composite its factors are 72 , 37 7 x 7 x 37 = 1813
151(12)+1=1813 1813
The word form is discrete!
13 in word form is: thirteen.thirteen
The earliest recording of Tangrams was in a Chinese book in the year 1813. It is a dissection puzzle with 7 pieces that fit together to form some shape of art.