Question 471261
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Hi,
Note: Prime Numbers from 0 to 100
2, 3, 5, 7, 11, {{{highlight(13)}}}, 17, 19, {{{highlight(23)}}}, 29, 31, 37, 41, 43, 47, 53, 59, 
61, 67, 71, 73, 79, 83, 89, 97
a is smallest prime number greater than 21 and b is the
largest prime number less than 16, then ab 
 a * b = 23*13 = 299