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
combinatorics
gerrymandering
number
quadratics
fractions
tangents
geometric means
coordinates
logic
elections
angles
doubling
axes
perfect numbers
median
shapes
circles
parabolas
hexagons
albgebra
wordplay
rectangles
dice
graphs
people maths
time
sums
division
digits
percentages
balancing
tournaments
functions
triangle numbers
addition
range
even numbers
decahedra
folding tube maps
numbers
cube numbers
geometric mean
matrices
crossnumbers
scales
mean
cryptic clues
integration
irreducible numbers
spheres
crossnumber
regular shapes
sequences
coins
crosswords
unit fractions
taxicab geometry
chess
bases
consecutive integers
square numbers
proportion
perimeter
2d shapes
christmas
digital products
grids
odd numbers
surds
cubics
volume
polynomials
multiples
clocks
lines
products
probabilty
dates
3d shapes
pentagons
star numbers
books
arrows
integers
cards
speed
geometry
the only crossnumber
routes
differentiation
determinants
partitions
squares
complex numbers
probability
palindromes
algebra
sets
triangles
polygons
calculus
dodecagons
area
trigonometry
binary
expansions
sport
chalkdust crossnumber
menace
means
remainders
advent
games
factorials
rugby
symmetry
averages
money
pascal's triangle
ave
multiplication
prime numbers
shape
square roots
floors
factors
dominos
indices
colouring
chocolate
cryptic crossnumbers
planes
quadrilaterals
consecutive numbers
sum to infinity
ellipses
tiling
digital clocks
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
numbers
tournaments
pentagons
polynomials
squares
the only crossnumber
dominos
grids
angles
means
wordplay
quadratics
crossnumber
percentages
doubling
geometry
probability
square numbers
irreducible numbers
crossnumbers
bases
digital clocks
tiling
partitions
elections
pascal's triangle
books
balancing
probabilty
symmetry
geometric mean
proportion
area
spheres
shapes
tangents
surds
factorials
planes
ellipses
arrows
complex numbers
christmas
games
volume
coordinates
range
menace
dates
cryptic crossnumbers
perimeter
time
star numbers
sets
rugby
advent
scales
shape
mean
sum to infinity
trigonometry
coins
prime numbers
money
addition
dice
colouring
sequences
triangle numbers
expansions
logic
odd numbers
quadrilaterals
indices
digits
circles
clocks
axes
perfect numbers
chalkdust crossnumber
binary
number
square roots
division
digital products
2d shapes
chocolate
consecutive integers
taxicab geometry
polygons
sport
graphs
folding tube maps
chess
albgebra
regular shapes
multiplication
cube numbers
averages
parabolas
integration
functions
matrices
ave
sums
rectangles
integers
calculus
differentiation
dodecagons
median
cryptic clues
geometric means
remainders
cubics
routes
factors
speed
consecutive numbers
products
triangles
gerrymandering
decahedra
combinatorics
floors
algebra
lines
multiples
determinants
palindromes
fractions
even numbers
people maths
cards
hexagons
crosswords
unit fractions
3d shapes
© Matthew Scroggs 2012–2024