Cody

Problems

1 – 10 of 10
Problem Title
Likes
Solvers
Difficulty

Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

4

245

Problem 365. Numbers with prime factors 2, 3 and 5.

Created by: elias GR

Tags primes, factors

3

174

Problem 1826. Find vampire numbers

Created by: Andrew Newell

Tags factors, number theory

9

148

Problem 656. Calculate Euler's phi function

Created by: Freddy

Tags math, basic matlab, factors

1

72

Problem 1804. Fangs of a vampire number

Created by: Andrew Newell

Tags factors, number theory

4

63

Problem 3075. Matrix of Multiplication Facts

Created by: James

Tags matrix, factors, elementary_school_math

9

53

Problem 1825. Find all vampire fangs

Created by: Andrew Newell

Tags factors, number theory

2

44

Problem 44229. How brilliant are you?

Created by: James

Tags factors, number theory, brilliant

3

37

Problem 44862. Ratio between sum of primes and sum of factors

Created by: Jesús Zambrano

Tags primes, factors, ratio

0

25

Problem 577. Repopulate the City

Created by: Ned Gulley

Tags factors

4

21
1 – 10 of 10