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Prime Number Challenge: Two Weeks In

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Joanna Witt - BBC Producer | 13:45 UK time, Tuesday, 19 July 2011

Thirteen petals on a flower

Thirteen petals on a flower by Paul Tyler

Hi Code Fans - mission control here with a check-in message now that we’ve been rolling on the Prime Number Challenge for a fortnight.

Two weeks ago, we invited you to find every prime number between 2 and 2011 (that’s 305 primes!) in order to release clues for the Code Challenge. This is no small feat, but you’ve come together on our Facebook and Twitter pages and risen to the task admirably. We’ve been delighted with the response and with the fantastic photos you’ve been submitting. Keep up the good work!

As a few of you have recently spotted, however, capturing every one of these 305 primes in the coming month isn’t just going to require some first-class camera skills. It’s also going to require some truly sensational teamwork. You’ll have to join forces to keep track of where you’re up to, which primes you’re missing, and to create a plan of attack for the rest of the challenge.

We know that you’ve got the ingenuity, the community spirit and the gumption. You already have two ideal places to connect and collaborate: our Twitter and Facebook pages and we’ll be feeding back on this blog so keep monitoring this page. So here’s the gauntlet we’re throwing at your feet: use Facebook, use Twitter, set up a forum, set up a wiki, create a system of smoke signals or an intricate network of carrier pigeons; however you do it, we want you to come together as a community to create the best method for you to successfully complete this challenge.

Date 1867 on a Heanor Town Hall in Derbyshire by Nigel Lee

Date 1867 on a Heanor Town Hall in Derbyshire by Nigel Lee

There you have it. 305 primes. 4 weeks. Surprise us. Make us proud. Crack the Code. 


  • Comment number 1.

    I think it is amazing that such collaboration is possible. I really like the thirteen petals on the flower. I am interested to see what other kinds of pictures get sent in. How did you come up with this idea for the challenge?


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