WHAT'S WHAT - HOME

A ‘prime’ number, indeed!

Mersenne primes – prime numbers of the order of 2n–1 – are considered significant in decoding encrypted data. Currently, there are 49 such numbers (the square of, again, a Mersenne prime). The most recently discovered number equals to 274,207,281–1, which also holds the record for the longest prime number, with nearly 24,000,000 digits! The Mersenne…

Read More
Circle

A circle and its sides

Mathematics defines a circle as a round plane figure whose boundary comprises of points at equal distance from a fixed point. Its boundary makes its circumference and the fixed point is the centre. There have been arguments that a circle is actually a polygon consisting of infinite number of sides. Geometrically, a polygon is a closed plane figure…

Read More

Spot an ‘a’ in the spellings of the first 100 natural numbers

In the spellings of the first 100 natural numbers, ‘a’ does not occur even once. One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Eleven, Twelve, Thirteen, Fourteen, Fifteen, Sixteen, Seventeen, Eighteen, Nineteen, Twenty, Twenty One, Twenty Two, Twenty Three, Twenty Four, Twenty Five, Twenty Six, Twenty Seven, Twenty Eight, Twenty Nine Thirty. Thirty…

Read More