MENTAL MULTIPLICATION OF TWO 20-DIGIT NUMBERS - WORLD RECORDS

This record is for the fastest time for an individual to multiply two twenty-digit numbers.

World Record Holder Country Title Achievement Time Date/Event/Venue Photo Video
Johann Martin Zacharias Dase Germany World Record Holder Correct 6:00 min 1861 - Exact date and venue unknown (Germany)
Granth Rakesh Thakkar India World Record Holder Correct 5min. 26 sec. 2 Sep. 2013 - Memoriad TR Center, Ankara (Turkey) Photos Video
Granth Rakesh Thakkar India World Record Holder Correct 4 min. 44 sec. 2 Sep. 2013 - Memoriad TR Center, Ankara (Turkey) Photos Video
Halil Uğur Adıgüzel Turkey World Record Holder Correct 4 min. 30 sec. 15 Mar. 2014 (World Brain Week)- Demora Hotel, Ankara (Turkey) Photos Video
Shourya Maheshwari India World Record Holder Correct 3 min. 59 sec. Memoriad World Record Attempts - 12 Oct. 2014 - Days Inn, Dresden (Germany) Photos Video
Granth Rakesh Thakkar India World Record Holder Correct 2 min. 48 sec. Memoriad World Record Attempts - 12 Oct. 2014 - Days Inn, Dresden (Germany) Photos Video