Human Calculator Breaks World Record 🧮
FastFourier's technique enables rapid mental calculations, setting a new world record with four-digit numbers. Detailed explanation inside.

Updraft
38.9M views • Mar 18, 2025

About this video
Human Calculator Sets World Record
IN-DEPTH EXPLANTION///Credits to @/FastFourier on X
His Technique.
Visualization: As each four-digit number appears (e.g., 3527), he imagines its representation on a mental abacus. The abacus is typically divided into columns for units, tens, hundreds, and thousands, with beads assigned values (e.g., 1s and 5s).
Finger Movements: His hands "place" the digits into their respective columns. For 3527, he might flick a finger to add 7 units, then adjust for 2 tens, 5 hundreds, and 3 thousands, carrying over as needed.
Running Total: With each new number, he updates the mental abacus, using his fingers to add the new values to the running sum column by column. The speed of the flashing numbers (about one every 0.309 seconds) aligns with his trained ability to process and "move beads" almost instantly.
Final Output: After the 100th number, he reads the final total from his mental abacus and inputs it.
This method doesn’t rely solely on raw mental arithmetic but leverages spatial reasoning, muscle memory, and pattern recognition—all honed through years of practice. Aaryan reportedly trains 5–6 hours daily, which has made the process intuitive, as he’s said: “A lot of things in mental calculations happen in a flash of a second, so I cannot say what happens inside my head, I just do it naturally.”
IN-DEPTH EXPLANTION///Credits to @/FastFourier on X
His Technique.
Visualization: As each four-digit number appears (e.g., 3527), he imagines its representation on a mental abacus. The abacus is typically divided into columns for units, tens, hundreds, and thousands, with beads assigned values (e.g., 1s and 5s).
Finger Movements: His hands "place" the digits into their respective columns. For 3527, he might flick a finger to add 7 units, then adjust for 2 tens, 5 hundreds, and 3 thousands, carrying over as needed.
Running Total: With each new number, he updates the mental abacus, using his fingers to add the new values to the running sum column by column. The speed of the flashing numbers (about one every 0.309 seconds) aligns with his trained ability to process and "move beads" almost instantly.
Final Output: After the 100th number, he reads the final total from his mental abacus and inputs it.
This method doesn’t rely solely on raw mental arithmetic but leverages spatial reasoning, muscle memory, and pattern recognition—all honed through years of practice. Aaryan reportedly trains 5–6 hours daily, which has made the process intuitive, as he’s said: “A lot of things in mental calculations happen in a flash of a second, so I cannot say what happens inside my head, I just do it naturally.”
Video Information
Views
38.9M
Likes
1.6M
Duration
0:49
Published
Mar 18, 2025
User Reviews
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