World Record Holder Country Title Achievement Time Point Date/Event/Venue Photo Video
Selçuk Soner Akgül Turkey Mental Square Root World Record Holder (6 Digit)

All Correct

7 min. 37 sec. 6 Sept. 2009 - Memoriad Turkey Championship - Neva Palas, Ankara - Turkey
Hakan Gürbaşlar Turkey Mental Square Root World Record Holder (6 Digit) All Correct 6 min. 37 sec. 20 March 2010 -Brain Awareness Week, Memoriad World Record Attempts - Neva Palas, Ankara - Turkey
Hakan Gürbaşlar Turkey Mental Square Root World Record Holder (6 Digit) All Correct 4 min. 55 sec. 1098,12 17 Dec. 2011 - Memoriad World Record Attempts - Neva Palas, Ankara - Turkey
Priyanshi Somani India Mental Square Root World Record Holder (6 Digit) All Correct 2 min. 43 sec. 3 Jan. 2012 - Memoriad World Record Attempts - Lourdes Covent School in Surat, India
Rhea Sandeep Shah India Mental Square Root World Record Holder (6 Digit) All Correct 2 min. 06,8 sec. 31 Aug. 2013 - Memoriad World Record Attempts Week - Memoriad Turkey Center, Ankara - Turkey
Rhea Sandeep Shah India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 33,8 sec. 31 Aug. 2013 - Memoriad World Record Attempts Week - Memoriad Turkey Center, Ankara - Turkey
Rhea Sandeep Shah India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 30,0 sec. 31 Aug. 2013 - Memoriad World Record Attempts Week - Memoriad Turkey Center, Ankara - Turkey
Granth Rakesh Thakkar India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 07,5 sec. 02 Sept. 2013 - Memoriad World Record Attempts Week - Memoriad Turkey Center, Ankara - Turkey
Granth Rakesh Thakkar India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 04,9 sec. 07 Oct. 2014 - Memoriad World Record Attempts - Dresden, Germany
Granth Rakesh Thakkar India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 01,9 sec. 07 Oct. 2014 - Memoriad World Record Attempts - Dresden, Germany
Shashank Jain India Mental Square Root World Record Holder (6 Digit) All Correct 1 min. 1,34 sec. 5282,04 2 Oct. 2016 - Memoriad World Record Attempts - Tüyap Palas Hotel, İstanbul - Turkey