Of the total cases, 500 are pending investigation for less than a year, 245 between one and two years, 61 for two to three years and 31 for three to five years, official data said.
The data was released at a press conference here by the CVC which exercises superintendence over the Central Bureau of Investigation (CBI) in corruption cases.
There are 6,358 corruption cases pending trial in various courts, 178 of them for over 20 years, it said.
A total of 148 requests in 88 cases are pending prosecution sanction against the corrupt government officials, the CVC said.
Of these, 72 requests in 41 cases are pending prosecution sanction for more than three months, it said.
As many as 40 requests in 25 cases are pending beyond the four month time limit prescribed by the Supreme Court to decide on sanction for prosecution, the CVC added.