https://www.dailymail.co.uk/sciencetech/article-3321924/It-pays-good-maths-Nigerian-professor-solves-156-year-old-Riemann-problem-scoop-1million-prize.html#:~:text=One%20of%20the%20most%20important,solved%20by%20a%20Nigerian%20professor.&text=Dr%20Opeyemi%20Enoch%20claims%20he,seven%20Millennium%20Problems%20in%20Mathematics.