The number two (2) is the second positive integer and the first prime number. This is a free online math calculator together with a variety of other free math calculators that compute standard deviation, percentage, fractions, and more. 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. 2 player games challenge a friend in our two player games! A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.
Explore math with our beautiful, free online graphing calculator. It is even, and is the only even prime (the primes other than 2 are called the odd primes). The graphing features turn abstract equations into pictures that actually make sense.