FRANKFURT, April 29 (Reuters) - The European Central Bank announced the following results for its latest liquidity providing operation: Main Refinancing Operation-Allotment Intended Volume: Reference Number: 20140092 Min Allotment: Transaction Type: Reverse Transactions Fixed Rate: 0.25 % Operation Type: Liquidity Providing Max Bid Limit: Procedure: Standard Tender Max Bids per Cpty: 1 Tender Date: 29/04/2014 11:15 Marg. Rate: Start Date: 30/04/2014 % of All. at Fixed Rate: 100 Maturity Date: 07/05/2014 Tot Amount Allotted: 172621.1 mn Duration (days): 7 Weight. Avg. Allot. Rate: Tot Bid Amount: 172621.1 mn Auction Type: Fixed Rate Tender Tot Number of Bidders: 266 Allotment Method: Min Rate (bids): Max Rate (bids): Estimate on 29/04/2014 of the average autonomous factors for the period 28/04/2014 to 06/05/2014 amounts to EUR 519.4 bn. Benchmark allotment based on the ECB's liquidity forecast as at 29/04/2014 amounts to EUR 178.0 bn. For general information on the calculation of the benchmark allotment amount, please see www.ecb.europa.eu/mopo/liq/html/index.en.html as well as ECB page Operational Communications.