Cody

# Problems

1 – 10 of 10
 Problem Title Likes Solvers Difficulty

#### Problem 51198. Find pairs of primes with the same digit sum and a specified separation

Created by: ChrisR

1

8

#### Problem 49733. Solve the arithmetic differential equation D(n) = n

Created by: ChrisR

0

4

#### Problem 51798. Label primes with the Erdos-Selfridge classification

Created by: ChrisR

1

7

#### Problem 50948. Identify prime words

Created by: ChrisR

Tags primes, strings

1

8

#### Problem 47843. Compute the arithmetic derivative of integers

Created by: ChrisR

0

14

#### Problem 47518. Play Outside In with primes

Created by: ChrisR

0

5

#### Problem 52669. Count the primes in Collatz sequences

Created by: ChrisR

1

6

#### Problem 51758. List Proth primes

Created by: ChrisR

Tags primes

0

6

#### Problem 49778. Determine whether a number is a prime self number

Created by: ChrisR

4

9

#### Problem 51077. List composite numbers that cannot be written as the sum of two primes

Created by: ChrisR

2

7

1 – 10 of 10