Cody

Problems

1 – 12 of 12
Problem Title
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Solvers
Difficulty

Problem 1826. Find vampire numbers

Created by: Andrew Newell

Tags factors, number theory

9

248

Problem 52724. Easy Sequences 20: Counting Prime-sided Rectangles

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

Problem 42834. Integer complexity (Large numbers)

Created by: Peng Liu

Tags integer, number theory, complexity

1

10

Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

Tags number theory, vampire

1

15

Problem 52709. Easy Sequences 19: Length of Prime-sided Rectangle with Maximum Area

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

Problem 44788. Find the right number make the equation

Created by: Binbin Qi

Tags number theory, positive number, Diophantine equations

2

9

Problem 52567. Easy Sequences 7: Easy as Composite Pi

Created by: Ramon Villamangca

Tags easy, sequences, primes

0

2

Problem 52659. Easy Sequences 15: Pythagorean Area with maximum Hypotenuse

Created by: Ramon Villamangca

Tags easy, geometry, number theory

1

3

Problem 52684. Easy Sequences 17: Mu Variant Function

Created by: Ramon Villamangca

Tags easy, sequences, function

0

2

Problem 2160. The 17x17 Problem

Created by: Ned Gulley

Tags 17x17, number theory

1

7

Problem 51580. Construct a continued fraction for a square root

Created by: ChrisR

Tags number theory, continued fractions, u. surrey

2

4

Problem 52769. Easy Sequences 22: Sum of Proper Fractions

Created by: Ramon Villamangca

Tags easy, number theory, sequence

1

2
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