Longest binary number memorised in 5 minutes

Binary is another name for base-2 numbering. The everyday numbers we’re used to counting with are base-10, meaning there are 10 basic numbers – 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 – from which all others are constructed. For example, 625 means there are 6 hundreds (10x10), 2 tens (10s) and 5 units. In binary there are just 2 basic numbers, 0 and 1. The number 6 would be written 110 – 1 four (2x2) plus 1 two (2s) plus zero units. In 2008, British man Ben Pridmore set the world record for memorising the most binary digits in five minutes – accurately reciting every digit from a randomly generated sequence 930 digits long. Pridmore set his impressive record at the 2008 UK Memory Championships in London, of which he was also the overall winner. Pridmore works by day as an accountant.