3. (5 points) Move the decimal point of 1.41 two places to the right, getting $a$, then the integer part of $a-1.41$ is


【Solution】Solution: Moving the decimal point of 1.41 two places to the right gives 141, i.e., $a=141$,
$$
a-1.41=141-1.41=139.59 \text {, }
$$
the integer part of 139.59 is 139.

Therefore, the answer is: 139.