Two golds in the Gulf
Memoriad 2024 ran from 6 to 10 November in the United Arab Emirates. World Mental Calculation, publishing the results on 14 December, recorded 121 mental calculation competitors from twenty countries, with nearly thirty further participants entered in the memory events alone.
In the eight-digit multiplications, Jain finished first, ahead of Freddis Reyes of Cuba and Jeonghee Lee of South Korea. In the six-digit square roots he finished first again, with a time of 40.82 seconds for ten tasks. Two golds in a field of that size, in two different families of calculation, is a rare double.
The square-root record
The competition result was not the end of it. The same report records that Jain subsequently set a world record of 27.3 seconds in the square-root discipline, cutting more than thirteen seconds from the time that had already won him the gold medal in the UAE.
Ten six-digit square roots in 27.3 seconds is an average of under three seconds a task, including hearing or reading the number, producing the root to the required precision and moving on. He was not alone in improving after the event: Kaloyan Geshev of Bulgaria, who won the division discipline in 71.65 seconds, went on to record 29.6 seconds.
What the disciplines involve
Eight-digit multiplication means multiplying two eight-digit numbers in the head, holding a sixteen-digit product in working memory while the partial results accumulate. There is no writing, and there is no way to check an intermediate step except by repeating it.
Six-digit square roots ask for the root of a six-digit number, typically to several decimal places, which requires estimation followed by refinement rather than a single algorithm run to completion. Both disciplines are timed across a set of ten tasks, so speed and accuracy are scored together: an error costs more than a slow answer.
Memoriad 2024
The programme covered both calculation and memory. Alongside the multiplication and square-root events, competitors contested ten-digit additions, won by Jeonghee Lee of South Korea ahead of two Indians, Parmar Priyansh Kiritbhai and Tambe Vighnesh Vijay; division by five-digit numbers, won by Geshev; calendar dates, won by Jay Baldiya Jain of India; and the Flash Anzan marathon, won by Lee with Siddhi Mukesh Jain of India second.
The memory side belonged to Mongolia, which took all six disciplines: numbers marathon, spoken numbers, flash numbers, binary digits, speed cards and number-shape recognition. Competitors chose their own events rather than contesting a single all-round title, so no overall champion is listed for 2024.
What is documented — and what is not
The firm facts are the results themselves: gold in eight-digit multiplications and in six-digit square roots at Memoriad 2024, a winning square-root time of 40.82 seconds for ten tasks, and a subsequent world record of 27.3 seconds, all published by World Mental Calculation on 14 December 2024.
Nothing personal is on the record. No age, date of birth, home town, school or occupation appears in the source, and no interview has been published alongside the results. The name is also a common one in India, so results attributed to a Shashank Jain elsewhere should not be assumed to belong to this competitor without confirmation.
| Person | Country | Milestone | Age / Stat |
|---|---|---|---|
| Shashank Jain | India | Gold in 8-digit multiplication and square roots, Memoriad 2024 | — |
| Granth Thakkar | India | Winning the Mental Calculation World Cup 2014 | — |
| Mekan Nurgeldiyev | Turkmenistan | Under-12 bronze, Junior Mental Calculation World Championship 2026 | — |
| Abhilakshya Arora | India | Winning the under-20 Junior Mental Calculation World Championship… | — |
| Arshika Gupta | India | Under-12 world champion, mental calculation, 2026 | — |
What is documented — and what is not
✓ Documented
- Gold in 8-digit multiplications and in 6-digit square roots at Memoriad 2024 (World Mental Calculation)
- Winning square-root time of 40.82 seconds for ten tasks
- Subsequent square-root world record of 27.3 seconds
- Memoriad 2024 held 6–10 November in the UAE with 121 calculators from 20 countries
? Unverified, disputed or wrong
- No age, date of birth, home town or school in the source
- The date and venue of the 27.3-second record attempt are not stated
- The name is common in India; other results under it are unconfirmed
Questions people ask about Shashank Jain
What did Shashank Jain win at Memoriad 2024?
Two golds: the eight-digit multiplications and the six-digit square roots, the latter in 40.82 seconds for ten tasks.
What is his world record?
27.3 seconds in the square-root discipline, set after Memoriad 2024 according to World Mental Calculation.
How old is Shashank Jain?
No source in this record gives his age or date of birth. The results page publishes names, countries and times only.
What are eight-digit multiplications?
Two eight-digit numbers multiplied entirely in the head, with no written working, scored on time across a set of tasks.
Is Shashank Jain on Wikipedia?
No Wikipedia article was found for him, and the name is common in India, so other people of the same name should not be confused with this competitor.
How big was the field?
121 mental calculation competitors from twenty countries, with nearly thirty more entered only in the memory events.
Where is Shashank Jain now?
No source in this record says. The published trail ends with the December 2024 results.
Who else set a record after the event?
Kaloyan Geshev of Bulgaria, who won the division event in 71.65 seconds and later recorded 29.6 seconds.
Quick quiz: how well do you know Jain’s story?
Which two disciplines did Shashank Jain win at Memoriad 2024?
What square-root world record does the report credit to him?
Where was Memoriad 2024 held?
Sources
- Memoriad 2024: Results — World Mental Calculation, 2024-12-14
Checked by the Geniuses.club editorial team. Ages are given as of September 2026.
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