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Prime numbers, the building blocks of mathematics, have fascinated for centuries − now technology is revolutionizing the search for them

Ph. Prime numbers are numbers that are not products of smaller whole numbers. Jeremiah Bartz Jeremiah Bartz, University of North Dakota A shard of smooth bone etched with irregular marks dating back 20,000 years puzzled archaeologists until they noticed something unique – the etchings, lines like tally marks, may have represented prime numbers.

Maths degrees are becoming less accessible – and this is a problem for business, government and innovation

ph. Ground Picture/Shutterstock Neil Saunders, City, University of London There’s a strange trend in mathematics education in England. Maths is the most popular subject at A-level since overtaking English in 2014. It’s taken by around 85,000 and 90,000 students a year. But many universities – particularly lower-tariff institutions, which accept students with lower