# Picky Primes

Prime numbers — those that are divisible usually by 1 and themselves — aren’t utterly as pointless as mathematicians thought. In particular, they seem to have

definite preferences about a final digits of a primes that follow them.

Primes generally dislike following primes with a same final number as their own. Among a initial billion primes, for example, primes finale in 9 follow a

prime also finale in 9 usually 60 percent as mostly as they follow a primary finale in 1.

In a paper submitted in March, Kannan Soundararajan of Stanford University and Robert Lemke Oliver of Tufts University showed that a settlement binds among

the initial 400 billion primes and offering a probable reason for it. The bent diminishes as primes get bigger, though usually really slowly.

The find repelled mathematicians, since a elemental bargain about primary numbers is that they act most like pointless numbers, but orderly

patterns in their distribution. The new information shows that this randomness is some-more difficult than had been believed.

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