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Paul Poulet
Belgian mathematician · Belgium · On the map · Academics · Lived 1887 to 1946 · aged 59
Paul Poulet (1887-1946) was a self-taught Belgian mathematician who made several important contributions to number theory, including the discovery of sociable numbers in 1918.
Paul Poulet is read about 2 times a day, in 6 languages.
A typical day, 30 days to 13 June 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.
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About this person
He found the 495th amicable pair, 666030256 = 24.19.331.6619 and 696630544 = 24.199.331.661, and is also remembered for calculating the pseudoprimes to base two, first up to 50 million in 1926, then up to 100 million in 1938. These are now often called Poulet numbers in his honour (they are also known as Fermatians or Sarrus numbers). In 1925, he published forty-three new multiperfect numbers, including the first two known octo-perfect numbers. His achievements are particularly remarkable given that he worked without the aid of modern computers and calculators.
