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Technology

Virtual currency 'Riecoin' tackles prime number enigma

By Jacob Aron

26 February 2014

Trust in Bitcoin may be low following the collapse of its biggest currency exchange, but a new virtual currency has an extra draw. is designed to help solve a mathematical mystery involving prime numbers.

As with Bitcoin, Riecoin users “mine” virtual coins using a program that solves a difficult mathematical problem. But with Riecoin, this mining process also finds clusters of consecutive prime numbers.

These “prime constellations” provide a way to test the Riemann hypothesis, which is one of the designated by the Clay Mathematics Institute in Providence, Rhode Island. A proof is worth $1 million.

Riecoin can’t find a proof, but it might find an example of a constellation that doesn’t fit with Riemann and so offer clues as to how to disprove it – although most mathematicians expect it to hold.

Riecoin is the second currency based on primes, after , which was launched last year.

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