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What number comes next?

Look at the series (13, 403, 122512, ?), determine the pattern, and find the value of the next number!

Correct answers: 54

The first user who solved this task is Fazil Hashim.

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Simon Flexner

Died 2 May 1946 at age 83 (born 25 Mar 1863).American pathologist and bacteriologist who isolated (1899) a common strain (Shigella dysenteriae) of dysentery bacillus and developed a curative serum for cerebrospinal meningitis (1907). He directed a research team that identified the poliomyelitis virus. At the Rockefeller Institute of Medical Research, he was director of laboratories (1903-35), and director of the Institute (1920-35). For thirty-five years he cultivated the spirit and guided the work of the institute, while implementing John D. Rockefeller's vision of bringing medicine into the realm of science.

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