# Tag Archives: Pi digits

## Pandigital numbers in 100,000 Digits of Pi

100,000 Digits of Pi Find pandigital numbers in the first 100,000 digits of Pi. For example,     Paul’s solutions:   {2,7,9,0,8,1,4,3,5,6} at 5470-th position {7,9,0,8,1,4,3,5,6,2} at 5471-st position {4,1,9,2,7,0,5,6,3,8} at 7115-th position {0,4,5,7,6,1,8,9,3,2} at 8668-th position {5,7,6,8,1,3,4,9,2,0} at … Continue reading

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## Prime numbers whose digits are the first 7 digits of π

List of prime numbers whose digits are the first 7 digits of     in some order     with the first   1,2,3,4,5,6   digits we can produce   1, 2, 1, 0, 15, 64   primes, respectively … Continue reading

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## Magic Squares and digits of π and e

——————————————   π  =  3.141592653589793…. e   =  2.718281828459045…   Goal : To replace each number with the corresponding digit of  π and e That is, to replace the number n in a magic square with … Continue reading

## Some musings on π — Part 4

3.141592653589793238462643383279502884197169399375105820974944592307816406286   Let’s form palindromes from the reflected pi digits and see how many primes we can produce: 3   is a prime number. 313   is a prime number. 31413   =   3 * 37 * 283 … Continue reading

## First 100 Pi Digits| Forming primes

The first 100 pi digits: 3.141592653   5897932384   6264338327   9502884197   1693993751   0582097494 4592307816   4062862089   9862803482   5342117067 3   is prime 13,   31   are prime the first 3 digits:     431 … Continue reading

## Some musings on π — Part 3

Older post:    Some musings on π — Part 2   20   =   e^π   –   π   +   1/(1111 + 1/(11 + 1/√(2))   –   k where k   =   0.00000000000121421131625263947781024776481412773701327429819…   e^π … Continue reading

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## Some musings on π — Part 2

Older posts: Feynman point Loop Sequences within π Some musings on π                                            ———————————–   926   appears in both   π   and   e^π : π   =   3.141592653589793238462643383279502884197169399375105820974944… e^π   =   23.14069263277926900572908636794854738026610624260021199344504… 926   in … Continue reading

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## Some musings on π

3.1415926535897932384626433832795028841971693993751058209749445923078164062 8620899862803482534211706798214808651328230664709384460955058223172535940812848 1117450284102701938521105559644622948954930381964428810975665933446128475648233 7867831652712019091456485669234603486104543266482133936072602491412737245870066 0631558817488152092096282925409171536436789259036001133053054882046652138414695 1941511609433057270365759…   Let’s write the closest value to π by using all digits   0 – 9   once each (1 – 23 + 45 * 67) / 890 = 2993/890 = 3.3629213483146067415730337078651685393258426966292134… 2993/890   … Continue reading

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## Fractions: Using all the digits 0 to 9 to express an approximation of π

67389 π     =     ——————-     =     3.141678321678321678321                    21450     67389 / 21450   =   3.14167832   (repeating decimal,   period 6)   67389 / 21450   =   3   +   1/8 … Continue reading

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## Mr. Chao Lu recited 67,890 digits of pi in 24 hours and 4 minutes

He successfully recited 67,890 digits of pi in 24 hours and 4 minutes[1] with an error at the 67,891st digit, saying it was a “5”, when it was actually a “0”. He stated he had 100,000 memorized, and was going … Continue reading

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