Question 1129381
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256 = 2^8;

3125 = 5^5.


So,  {{{256^39}}}.{{{3125^62}}} = {{{2^(8*39)}}}.{{{5^(5*62)}}} = {{{2^312*5^310}}} = {{{4*(2^310*5^310)}}} = {{{4*10^310}}}.


The first digit of this number is 4 followed with 310 zeroes.


The number of digits is 311, in all.
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