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Bismuth — heaviest stable element, #83
Bismuth (Bi) with atomic number 83 was considered the heaviest stable element. In 2003, it was found to be weakly radioactive, but its half-life (1.9 × 10¹⁹ years) is a billion times the age of the Universe.
Science
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83 — a prime number
The number 83 is prime, the 23rd prime. Interestingly, 83 is a super-prime — both itself and its rank (23) are prime. Such numbers are comparatively few.
Numerology
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'83' — India's 1983 Cricket World Cup win
In 1983, the Indian cricket team unexpectedly won the World Cup, defeating the favorites — the West Indies. This event transformed India's relationship with cricket. The film '83' (2021) tells this triumph's story.
History