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What number comes next?

Look at the series (2, 3, 6, 21, 231), determine the pattern, and find the value of the next number!

Correct answers: 56

The first user who solved this task is Slobodan Strelac.

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Math Teacher

Math Teacher: "If I have 5 bottles in one hand and 6 in the other hand, what do I have?"
Student: "A drinking problem."

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First exoplanet announced in error

In 1991, a University of Manchester scientist announced the finding a planet outside of solar system. Andrew G. Lyne of the University of Manchester subsequently retracted his claim for a planet around pulsar PSR 1829-10 at the Jan 1992 meeting of the American Astronomical Society in Atlanta. He said that the modulation of radio waves coming from the pulsar was caused not by the presence of a planet but was in fact an artifact of the Earth's motion around the Sun. That possibility that had been considered but then discounted in earlier studies of the data. The first exoplanets (and were later confirmated) were announced in an article in Nature in 1992 by Aleksander Wolszczan and Dale Frail.

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