Tuesday 4 September 2018

Prime numbers


  •       Remember how the early scientists visited Africa and some other parts of the world and ‘discovered’ naturally existing things like mountains, rivers and other places, something close to that has happened again.

  •      This time round, though, it is not in either of the above areas.

  •      Two mathematicians have uncovered a simple, yet previously unnoticed quality of prime numbers. So, apparently, the prime number sequence isn’t as random as earlier thought.

  • Prime numbers as you will hopefully recall from your early formation years in primary school, are whole numbers that are only divisible by 1 and themselves. They include 2,3,5,7,11and so on.


  •       Kannan Soundararajan and Robert Lemke Oliver, present new evidence that prime numbers ward off other would-be primes that end in the same digits.


  •      From the initial set (numbers less than ten) 2 and 5 were part of the primes, but when they appear next as in 12, 15, 22, 25, they are no longer primes as they are divisible by other numbers other than 1, and themselves. Thus, all other prime numbers can only end in one of four digits: 1, 3, 7, or 9.
  •           As fascinating as the new study appears, George Dvorsky in an article argues that it likely won’t help with other prime-related challenges including the twin-prime conjecture or the Riemann hypothesis. He adds that the new discovery may not have any practical implications or use to math and number theory.

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