mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
Advent calendar 2017
21 December
All 2017 advent puzzles
~
More information
The factors of 6 (excluding 6 itself) are 1, 2 and 3. \(1+2+3=6\), so 6 is a
perfect number
.
Today's number is the only three digit perfect number.
Show answer
Hide answer
496
Tags:
numbers
,
factors
,
perfect numbers
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
consecutive numbers
tiling
surds
grids
elections
cube numbers
tangents
coordinates
factorials
christmas
time
squares
sums
area
geometry
averages
wordplay
indices
cubics
albgebra
symmetry
digital clocks
prime factors
factors
cards
speed
multiplication
star numbers
binary
prime numbers
percentages
crossnumbers
odd numbers
tournaments
mean
median
determinants
graphs
arrows
multiplaction squares
algebra
dodecagons
colouring
pentagons
sequences
geometric means
addition
volume
taxicab geometry
folding tube maps
pascal's triangle
expansions
spheres
proportion
polynomials
shapes
neighbours
integers
range
advent
quadratics
dice
combinatorics
square roots
geometric mean
complex numbers
3d shapes
books
ellipses
planes
division
chess
unit fractions
cryptic crossnumbers
circles
hexagons
gerrymandering
doubling
digits
parabolas
digital products
scales
money
differentiation
consecutive integers
dates
bases
square numbers
fractions
square grids
floors
partitions
sport
cryptic clues
the only crossnumber
xor
rugby
palindromes
multiples
ave
integration
number
axes
rectangles
clocks
people maths
products
triangle numbers
medians
triangles
perimeter
coins
games
trigonometry
angles
means
probability
lists
dominos
calculus
shape
lines
balancing
matrices
perfect numbers
functions
sum to infinity
quadrilaterals
probabilty
regular shapes
powers
crosswords
remainders
chocolate
numbers
even numbers
routes
polygons
2d shapes
menace
logic
decahedra
sets
chalkdust crossnumber
irreducible numbers
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
calculus
pentagons
square grids
geometric mean
numbers
crosswords
dice
factors
square numbers
combinatorics
sequences
perfect numbers
circles
polynomials
prime numbers
grids
area
multiples
chocolate
surds
palindromes
digital products
lists
mean
coordinates
square roots
menace
clocks
expansions
sets
quadratics
rectangles
cubics
remainders
proportion
cards
xor
wordplay
arrows
hexagons
routes
digits
factorials
probability
cryptic crossnumbers
dodecagons
regular shapes
the only crossnumber
division
even numbers
colouring
number
chalkdust crossnumber
ellipses
sums
algebra
money
geometry
means
irreducible numbers
dominos
pascal's triangle
elections
powers
decahedra
gerrymandering
christmas
addition
folding tube maps
polygons
perimeter
consecutive numbers
people maths
products
sum to infinity
digital clocks
integration
star numbers
graphs
multiplication
speed
axes
ave
angles
taxicab geometry
books
3d shapes
lines
games
partitions
cube numbers
doubling
dates
unit fractions
shape
percentages
functions
scales
fractions
multiplaction squares
advent
crossnumbers
differentiation
planes
probabilty
odd numbers
squares
complex numbers
integers
median
neighbours
albgebra
symmetry
range
shapes
logic
consecutive integers
trigonometry
triangle numbers
matrices
chess
determinants
bases
quadrilaterals
geometric means
tiling
tangents
floors
binary
time
spheres
prime factors
parabolas
cryptic clues
balancing
coins
tournaments
averages
rugby
2d shapes
medians
volume
triangles
indices
sport
© Matthew Scroggs 2012–2026