The number 1 is known as the best number because of it representing "first place". In competitions, when someone comes in first place it means they have won. Because of competitions, the number 1 has been linked in people's minds to winning; making it known as the best number.
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As of August 2017, the largest known prime number is 2^74,207,281 − 1, a number with 22,338,618digits.
A number with only two factors - 1 and itself - is known as a prime number.
As of August 2017, the largest known prime number is 2^74,207,281 − 1, a number with 22,338,618digits.
As of 2015, the longest prime number known ends in 1.
1