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Calculate product...

Calculate product of four consecutive prime numbers with the sum of 220.

Correct answers: 53

The first user who solved this task is Sanja Šabović.

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Anthony Jeselnik: Christmas Gifts

This past Christmas, I told my girlfriend for months in advance, Baby, all I want from you this year is an Xbox. Thats it. Beginning and end of list: Xbox. You know what she got me? A homemade frame with a picture of us from our first date together. Which was fine -- because I got her an Xbox.

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Roller skate

In 1869, Isaac Hodgson received a U.S. patent No. 88,711 for his “roller-skate,” with a padded shoe attached to the skate frame. The earliest known type, using two large wheels on each skate was invented by a Belgian, Joseph Merlin, in 1759. In England, Robert John Tyers, a Picadilly fruiterer, on 22 Apr 1823 patented his Volitos, an “apparatus to be attached to boots ... for the purpose of travelling or pleasure,” which used five small wheels in a single line. Somewhat similar skates with rollers were used to simulate ice skating in a scene of Meyerbeer's opera Prophète, Paris, 16 Apr 1849.* Another American inventor, James L. Plimpton of New York, had a patent for four-wheeled roller skates from 1863, whose right was affirmed at a trial for infringement, 28 Jan 1876.*

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