Express 34 Earth years in Earth Days.
You know that each of these days lasts for 1000 years on Mars so multiply Earth days by your ratio to give the amount of Mars years
Assuming Mars uses the same time structure as Earth (and assuming the Julian calendar of 365.25 days/yr) then you can work out how many Mars minutes are in a Mars year
Multiply by this number to get the amount of Mars minutes.
If I used a worked example using 1 year on Earth in Martian minutes:
1 Earth year = 365.25 Earth Days
365.25 Earth Days = 365,250 Mars Years
1 Mars year = 365.25 days/yr * 24h/day * 60mins/hr = 525,960 Mars Minutes
Thus there are 525,960*365,250 = 1.921*10^11 Mars Minutes in One Earth Year