About this app

The number Pi (π) is an irrational number (its decimal representation does not end and is not periodic), which is equal to the ratio of the circumference of the circle to its diameter. This app allows you to find both a specific digit and a range of decimal places out of 1 billion known ones. By downloading a suitable number of digits of Pi to your phone, you can use the application without Internet access. With the number Pi, you can train your memory by learning hundreds or even thousands of digits, and the lack of advertising makes working in the app as comfortable as possible.

Interesting facts about the number Pi:
● Pi number calculation – a standard test to check the computing power of a computer;
● If you know at least 39 decimal places, you can calculate the length of a circle with a diameter like the Universe, with an error of no more than the radius of a hydrogen atom.;
● Position 762 is known as the Feynman point, from which six nines in a row begin;
● To represent the number Pi, the fraction 22/7 is widely used, it gives an accuracy of 0.04025%;
● The first million decimal places of Pi consist of 99,959 zeros, 99,758 ones, 100,026 twos, 100,229 triples, 100,359 fives, 99,548 sevens, 99,800 eights, and 100,106 nines;
● In 2002, a Japanese scientist calculated 1.24 trillion digits of Pi using a powerful Hitachi SR 8000 computer. In October 2011, the number pi was calculated with an accuracy of 10 trillion decimal places.

History of Pi:
Competitions are held in the ability to remember as many decimal places as possible. So, according to the Guinness Book of Records, on March 21, 2015, Indian student Rajveer Meena reproduced about 70,000 characters in nine hours. But to use the number Pi in science, it is enough to know only the first 40 digits. To calculate it approximately, an ordinary thread will suffice. The Greek Archimedes in the III century BC drew regular polygons inside and outside the circle. Adding up the lengths of the sides of the polygons, he realized that the number Pi is approximately 3.14.

Mathematicians celebrate their unofficial holiday (the International Day of the number "Pi") annually on March 14 at 1:59:26 hours. The idea of the holiday was invented in 1987 by Larry Shaw, when he noticed that in the American date system, March 14 is 3/14, and together with the time 1:59:26, they give the first digits of the number Pi.

The first 100 digits of Pi:
3,1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679.

To achieve truly outstanding results, record holders use the visualization technique: images are easier to remember than numbers. First, you need to match each digit of Pi with a consonant letter. It turns out that each two-digit number (from 00 to 99) corresponds to a two-letter combination.

Some scientists claim that humans are programmed to find patterns in everything, because this is the only way we can give meaning to the whole world and to ourselves. And that is why we are so attracted to the "irregular" number of Pi.

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