mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
subscribe
Loading image...
Advent calendar 2015
23 December
All 2015 advent puzzles
~
More information
This number is a prime number. If you treble it and add 16, the result is also prime. Repeating this will give 11 prime numbers in total (including the number itself).
Show answer
Hide answer
587
Tags:
numbers
,
prime numbers
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
integers
shape
quadrilaterals
dominos
dates
means
parabolas
perfect numbers
people maths
decahedra
floors
odd numbers
sport
pentagons
sums
rugby
numbers
shapes
sum to infinity
arrows
tangents
probabilty
colouring
clocks
calculus
grids
fractions
hexagons
probability
range
games
3d shapes
area
square numbers
coins
cards
crossnumbers
cryptic clues
square roots
surds
folding tube maps
doubling
consecutive numbers
geometric mean
circles
pascal's triangle
advent
the only crossnumber
chocolate
functions
elections
multiples
differentiation
integration
trigonometry
planes
averages
polynomials
ellipses
triangle numbers
percentages
menace
indices
lines
cube numbers
number
books
ave
dodecagons
polygons
christmas
even numbers
2d shapes
complex numbers
dice
combinatorics
routes
determinants
gerrymandering
symmetry
algebra
irreducible numbers
tiling
partitions
multiplication
chess
palindromes
perimeter
bases
consecutive integers
regular shapes
prime numbers
unit fractions
chalkdust crossnumber
factors
spheres
remainders
time
quadratics
expansions
triangles
albgebra
geometric means
crossnumber
mean
balancing
money
matrices
binary
coordinates
digital clocks
digits
squares
star numbers
speed
addition
crosswords
proportion
angles
logic
graphs
geometry
median
sequences
cubics
tournaments
axes
digital products
division
factorials
taxicab geometry
wordplay
volume
sets
products
rectangles
cryptic crossnumbers
scales
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
quadratics
square roots
wordplay
tournaments
taxicab geometry
binary
coordinates
differentiation
rectangles
cryptic clues
range
digits
regular shapes
proportion
geometric mean
coins
axes
dates
remainders
combinatorics
median
doubling
grids
calculus
cubics
sport
irreducible numbers
factors
graphs
the only crossnumber
cards
angles
functions
floors
star numbers
folding tube maps
crossnumber
menace
complex numbers
algebra
square numbers
multiplication
dice
elections
ave
tangents
symmetry
mean
perimeter
digital clocks
scales
shapes
bases
percentages
probability
polygons
money
geometry
even numbers
ellipses
squares
expansions
christmas
triangle numbers
unit fractions
books
crosswords
parabolas
routes
colouring
time
matrices
consecutive integers
means
rugby
pascal's triangle
games
chess
area
cube numbers
products
perfect numbers
sets
chocolate
integers
sum to infinity
decahedra
addition
gerrymandering
advent
partitions
logic
pentagons
sums
dodecagons
quadrilaterals
tiling
polynomials
odd numbers
sequences
determinants
balancing
volume
cryptic crossnumbers
indices
probabilty
multiples
planes
people maths
3d shapes
chalkdust crossnumber
numbers
crossnumbers
shape
clocks
surds
integration
consecutive numbers
hexagons
division
circles
dominos
albgebra
geometric means
trigonometry
fractions
triangles
spheres
speed
palindromes
averages
2d shapes
prime numbers
arrows
factorials
lines
digital products
number
© Matthew Scroggs 2012–2024