Yellow Pig Day is celebrated on July 17 and is a holiday especially for the mathematicians of the world. Our research found that National Pig Day originated sometime during early 1960 by two mathematicians named Michael Spivak and David Kelly.
17 is a prime number that has significance in mathematics. It is the sum of the first four prime numbers - 2, 3, 5 and 7. A prime number is a number that can only be divided by 1 and by itself. Several studies have shown that when people are asked to choose a number between 1 and 20, a majority of people choose the number 17.
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