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9936 = 2⁴ × 3³ × 23: cube of three
9936 = 16×27×23. The number contains 27=3³ (cube of three) and 16=2⁴ (power of two). Two power numbers in one product — a mathematically rich structure.
Science
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Sum 27 → 9: cube of three in digits and result
9+9+3+6=27=3³→9. The digit sum equals 27 — the cube of three already present in the factorisation. The number reflects itself in its digit sum — rare mathematical self-similarity.
Numerology
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996 AD — Gerbert of Aurillac creates the first clock
Around 996, Gerbert of Aurillac (future Pope Sylvester II) created the first mechanical striking clock — the monk who brought mathematics and astronomy from the Arab world to medieval Europe.
History