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Advent calendar 2021
17 December
All 2021 advent puzzles
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The digital product of a number is computed by multiplying together all of its digits. For example, the digital product of 6273 is 252.
Today's number is the smallest number whose digital product is 252.
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252 can be written as the product of one-digit numbers in the following ways:
2×2×3×3×7
2×2×9×7
2×3×6×7
3×3×4×7
6×6×7
4×9×7
Therfore, the smallest number whose digital product is 252 is
479
.
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lines
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floors
number
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sum to infinity
ellipses
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ave
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prime numbers
angles
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irreducible numbers
sums
bases
cryptic clues
range
trigonometry
colouring
cubics
matrices
indices
christmas
taxicab geometry
perfect numbers
albgebra
square grids
integration
multiples
averages
clocks
square roots
squares
binary
perimeter
triangles
hexagons
multiplication
graphs
dodecagons
cube numbers
calculus
balancing
consecutive integers
symmetry
sets
even numbers
dice
powers
folding tube maps
money
polygons
differentiation
partitions
logic
digits
speed
coins
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remainders
2d shapes
games
chalkdust crossnumber
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pascal's triangle
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