A significant discovery has shook the mathematical world: Prime numbers are not actually random. Apart from two and five, every single prime number finishes with either one, three, seven, or nine. If there was no arrangement, then the chance of having two consecutive primes ending with either number should constantly be 25 percent, but that's not always the case. Kannan Soundararajan and Robert Lemke Oliver of Stanford University in California have revealed that in the first 100 million prime numbers, a prime ending in one is followed by another ending in one 18.5 percent of the time, by three 29.7 percent, by seven 30 percent, and by nine 21.8 percent. In other words, the prime's final number is most likely not to be repeated.
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July 2020
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