sentence: here are the final digit strings for each of the three calculations : binary digits of pi from five trillion minus three to five trillion seventy-six ( completed august 30 , 1998 ) : binary digits of pi from forty trillion minus three to forty trillion sixty-four ( february 9 , 1999 ) : binary digits of pi from one quadrillion minus three to one quadrillion sixty ( september 11 , 2000 ) : therefore , the least significant known bit of pi is 1 at position 1,000,000,000,000,060 ( one quadrillion sixty ) or 10 15 +60 .