Muhammad Baqir Yazdi was an Iranian

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

who lived in the 16th century. He gave the pair of

amicable numbers In mathematics, the amicable numbers are two different natural numbers related in such a way that the addition, sum of the proper divisors of each is equal to the other number. That is, ''s''(''a'')=''b'' and ''s''(''b'')=''a'', where ''s''(''n ...

9,363,584 and 9,437,056 many years before

Euler Leonhard Euler ( ; ; ; 15 April 170718 September 1783) was a Swiss polymath who was active as a mathematician, physicist, astronomer, logician, geographer, and engineer. He founded the studies of graph theory and topology and made influential ...

's contribution to amicable numbers. His major book is ''Oyoun Alhesab'' (Arabic:عيون الحساب).

References

16th-century Iranian mathematicians Year of birth unknown Year of death unknown {{Asia-mathematician-stub