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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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Julian McCullough: List of Priorities

I dont have any curtains in my apartment. I tried to buy curtains; I went to the store, I was like, I would like these curtains, please. And they were like, $40. And I was like, Nope. Found out right then just how low on my list of priorities curtains were. It turns out Id rather get drunk once than ever have curtains for the rest of my life.

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Vertijet

In 1957, a Ryan X-13 Vertijet became the first jet to take-off and land vertically. The airplane made history when it completed a first full-cycle flight at Edwards Air Force Base, California. It took off vertically from its mobile trailer, rose into the air, nosed over into a level attitude, and flew for several minutes. It then reversed the procedure to vertical flight and slowly descended to its trailer for a safe landing. The X-13 was designed to test the idea of vertical takeoff, transition to horizontal flight, and return to vertical flight for landing by jet aircraft. Equipped with a temporary tricycle landing gear, it was flown conventionally on 10 Dec 1955 to test its overall aerodynamic characteristics. It was then fitted with a temporary "tail sitting" rig and on 28 May 1956, flown from the ground in a vertical position to test its hovering qualities.

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