In 1873, William Shanks calculated the value of π to 707 decimal places, a tremendous accomplishment in the days before computers or other mechanical aids to calculation. This remained the most precise value of π to be calculated for almost 75 years, until D. F. Ferguson used a desk calculator to calculate π to 808 decimal places. Making this calculation, Ferguson discovers that Shanks' calculation of π was wrong starting at the 528th decimal place. Below is the value that Shanks calculated for π, with the position of the first error in **bold**.
You can see the correct value of π to 10,000 decimal places here.

π = 3. 1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679 8214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196 4428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273 7245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094 3305727036575959195309218611738193261179310511854807446237996274956735188575272489122793818301194912 9833673362440656643086021395016092448077230943628553096620275569397986950222474996206074970304123668 8619951100892023837702131416941190298858254468163979990465970008170029631237738134208413079145118398 0570985+