THE PUZZLET PAGE

Subject Index by Keyword P - R

Full Titles:A-C   D-F   G-O   P-R   S-T   U-Z, numbers


Key WordPuzzlet NumberTitle
Palindromic 4Palindromic Squares
26Palindromic Odometer Readings
53Six-Palindromic Odd Numbers
96Palindromic Waves
107Even Digit-Count Palindromic Squares
189Morse Code & Palindromic Primes
190Count the Days for Palindromic Primes
PanDigital 2Make 100 From A PanDigital
3PanDigital Fractions
10PanDigitals Made from Squares
21An Upside-Down PanDigital!
34A Pandigital Equation
37A 10-digit Pandigital from 3rd/4th Powers
42Pandigital Groups
82A Pandigitally Logarithmic Equation
123Square Pandigitals
141A 10-digit Pandigital from 2nd/3rd PowersA Factorial Prime is a prime which is
' one more or one less than a factorial.
' Example: 23 is a Factorial Prime since
' it's (4! - 1), that is one less than
' the factorial of 4.
' Find all Factorial Primes up to 10^12.
157Pandigitals from Squared Pandigital Parts
193A Repeating Series from a PanDigital
Panel 176A Control Panel Problem
Parts 55Squares with Consecutive Parts
157Pandigitals from Squared Pandigital Parts
Pattern 185A Prime with a Digit Pattern
Pence 13Pounds, Shillings, and Pence
Pentagonal 188Figurate Pentagonals
Permutation 150Digit Permutation Sums
158Primes from Prime Digit Permutations
Playing 127Playing Card Scores
Pound 13Pounds, Shillings, and Pence
Power 16Multiples of Numbers from Powers of their Digits
33Digits and Powers
37A 10-digit Pandigital from 3rd/4th Powers
60Fourth Powers
132Self-Generating Integer from Digit Powers
135Numbers formed from Powers of their own Digits
141A 10-digit Pandigital from 2nd/3rd Powers
197Sums of Powers in Alternate Number Bases
Prefix 129Un-Prefixable Primes
Prime 12Ordered Primes from Composites
19Prime Number Intervals
36Primes and Cubes
48Manipulating Primes
61Prime Fibonacci Numbers
77Making Primes from Primes
90Primes Both Ways
95PrimeRuns
120Squares from Twin Primes
129Un-Prefixable Primes
131Primes of Type 4n - 1
133Primes from Prime Digits
139Palindromes from Twin Primes
151Sub-Number Primes
158Primes from Prime Digit Permutations
161Squares from Reversed Primes
166Prime Factor Sum
171Primes from Prime Digit Rotations
174A Sequence from Odd, Even & Prime Numbers
179Shared Prime Factor Sums
182Squares from Concatenated Prime Factors
185A Prime with a Digit Pattern
189Morse Code & Palindromic Primes
190Count the Days for Palindromic Primes
200The LSD of Prime Numbers
204Prime Runs including Zero
205Consecutive Integers with same Prime Factor Sum
216Consecutive Primes With Target Intervals
217Prime Factor Sequence
219Composite to Prime Ratios
221Prime Factors
225Prime Factorials
Primitive 183Integer Products by Digit Rotation
Problem 176A Control Panel Problem
Process 66The Kaprekar Process
Product 23Integer Products by Digit Rotation
31Products and Reversed Sums
39Equal Products and Sums
41Digital Products
65Repeated Digit Product
73Anagrammatic Products & 31
78UniDigits from Products
84Anagrammatic Products
113Self-Generated Integer Products
122A Run from a Product
126Matrix Products
144A Reversed Product
159Triangular Numbers from Triplet Products
170Integer Products Again
195Hexadecimal Product Anagrams
199A Sequence from Digit Sums & Products
210Triplets with the same Final Digit Product
Progression 89Arithmetic Progressions and Palindromes
Proper 114Proper Divisor Strings
Prosum224Prosum Numbers
Quadratic 71A Quadratic Discriminator
Ratio219Composite to Prime Ratios
Reading 26Palindromic Odometer Readings
Rectangle 70A Rectangle and a Square
Related 102Related Ages
Repeated 110Repeated Digit Sums and 15
Return 67A Return Car Journey
Reversal,
Reverse,
Reversed,














l
31Products and Reversed Sums
57Integer Reversals
58Reversals and Anagrams
101Numerical Reversals
134A Square from an Integer and its Reverse
137A Reverse Run from Squares
144A Reversed Product
147Denary Integer Reversal in A Lower Base
1543-Digit Integer Reversal for any Base Change
161Squares from Reversed Primes
173Age Reversals
180Generating Reverse Runs
Right 28Right-Angled Triangles
43More Right-Angled Triangles
64Another Right-Angled Triangle
183A Primitive Right-Angled Triangle
Root 162Squares with Embedded Roots
Rotated 153Squares from Rotated Squares
Run 74A run from two squares
95PrimeRuns
122A Run from a Product
137A Reverse Run from Squares
140A Square from two Runs
180Generating Reverse Runs
186A Run of Consecutive Composites
204Prime Runs including Zero


Full Titles:A-C   D-F   G-O   P-R   S-T   U-Z, numbers


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