A fascinating but little known application of prime numbers involves the search for, and communication with, extraterrestrials. In the 1997 film Contact (adapted from Carl Sagan’s novel by the same name), Ellie Arroway and her team of radio telescope ET hunters pick up a repeating signal from the nearby star Vega (around 25 light years away). 1,532 more words
Tags » Primes
The pursuit of beauty http://www.newyorker.com/magazine/2015/02/02/pursuit-beauty Zhang’s 2 accomplishments: Solving a #math mystery about gaps in primes & Doing it after age 50
Profiles FEBRUARY 2, 2015 ISSUE… 13 more words
Problem: The arithmetic sequence, 1487, 4817, 8147, in which each of the terms increases by 3330, is unusual in two ways: (i) each of the three terms are prime, and, (ii) each of the 4-digit numbers are permutations of one another. 499 more words
Many times the train of thought starts off and it all becomes a blur.
Do you know this expression, “train of thought”? It means that it’s not just one idea, it’s a series of ideas. 2,072 more words
Problem: We shall say that an n-digit number is pandigital if it makes use of all the digits 1 to n exactly once. For example, 2143 is a 4-digit pandigital and is also prime. 286 more words