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25.05.2026 New claim submitted for Backwards Stair Climbing, 1 Hour 09.05.2026 New claim submitted for Mental Calculation, Division 09.05.2026 New claim submitted for Mental Calculation, Square Roots Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Multiplying two 5-digit numbers - Current world record 1. Aaryan Shukla (India) solved ten mental calculation tasks of the type "multiply two 5-digit numbers" without an error in 56.7 seconds at the Mental Calculation World Cup on 16 July 2022 in Paderborn, Germany.   Previous verified claims 1. Marc Jornet Sanz (Spain) correctly solved ten mental calculation tasks of the type "multiply two 5-digit numbers" without an error in 1:16 minutes on 23 September 2010 at the Mathematics Faculty of the University of Valencia, Spain. 2. Marc Jornet Sanz (Spain) solved ten mental calculation tasks of the type "multiply two 5-digit numbers" without an error in 1:42 minutes at the Mental Calculation World Cup 2010 on 5 June 2010 in Magdeburg, Germany.     The Book of Alternative records - World records, record breakers and more!