64 is both a perfect square (64 = 8 × 8) and a cube. (64 = 4 × 4 × 4). 8 has four factors, 8, 4, 2 and 1. It is a composite number and also a cube number: 8 = 2 × 2 × 2. 16 has five factors ...

A new DNA computer calculates square roots of ... that calculates the roots of perfect squares up to 900, New Scientist reports. The computer works by sequencing numbers up to about 1,000 onto ...

It feels like a perfect night ... The initialed squares will eventually cover the entire grid, at which point each column and row will be labeled with a random number from 0 to 9.