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Old 2019-07-19, 06:52   #1
enzocreti
 
Mar 2018

21216 Posts
Default A/307

pg(215) and pg(541456) are probable primes where 215 and 541456 have the same residue mod 41, the residue is ten. 215 and 541456 are multiples of 43,


215/307 and 541456/307 have also the same decimal periodic expansion 0.7003257...(lenght of the period 153)


consider the fraction:


A/307


A integer


for which values of A, A/307 has a decimal periodic expansion of 0.700325...?


Surely 215 and 541456 ...are there other values of A?


A=1763*307*k+215 they have the same decimal periodic expansion 0.700...

Last fiddled with by enzocreti on 2019-07-19 at 08:00
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