High Quality Content by WIKIPEDIA articles! In mathematics, a Wieferich pair is a pair of prime numbers p and q that satisfy pq 1 1 (mod q2) and qp 1 1 (mod p2) Wieferich pairs are named after German mathematician Arthur Wieferich.Arthur Josef Alwin Wieferich (April 27, 1884 September 15, 1954) was a German mathematician and teacher, remembered for his work on number theory. He was born in Münster, attended the University of Münster (1903 1909) and then worked widely as a school teacher and tutor until his retirement in 1949. He married in 1916 and had no children.