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The digit used in the modern western world to represent the number 2 traces its roots back to the indic brahmic script, where 2 was written as two horizontal lines. No subscriptions, no paywalls, no catches. A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.
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It is even, and is the only even prime (the primes other than 2 are called the odd primes).
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