Dragonball Z uses power levels until the end of freeza saga.
From Daizenshuu Guide we know that Goku's last power level in his normal stage was 3,000,000.
After transforming into a ssj his power level goes up to 150,000,000.
This means a saiyan gets a x50 power up when becoming a ssj.
How much does a saiyan power up becoming a ssj2,ssj3?