James Grime is a mathematician and presenter who shares puzzles, number theory and codebreaking through singingbanana, Numberphile and live talks.
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James’s happenings, collected from public sources, plus his backstory and Starbook, where fans write.
James returned to Numberphile to demonstrate a dissection that converts an equilateral triangle into a square. The episode also links to research on why the dissection is optimal.
numberphile.comWatch Squaring the TriangleVitenfabrikken announced that James will write the puzzles for its 2027 Kodeknekkeren competition. The museum also confirms he created the 2026 challenges and shares his earlier teaser puzzles.
jaermuseet.noRead the competition announcementHis Recreational Mathematics Magazine article explores a carnival-style dice game. James explains how rearranging seven rolled digits can produce a multiple of seven, and gives a strategy for finding one.
reference-global.comRead The Seven Dice ShuffleJames joined the speaker lineup for Maths Fest at Kensington Town Hall. The festival brought sixth-form students together for a day of mathematical talks and activities.
MathsWorld London’s Armistice Day event featured James alongside GCHQ staff, exploring Alan Turing and the Enigma machine. The event marked the 80th anniversary year of the end of the Second World War.
mathsworld.comMeet the Enigma Machine eventFind his puzzles, videos and live talks on his official channels.
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