# Problems

1 – 18 of 18
 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 51466. List prime anagrams of a number

Created by: ChrisR

1

16

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

Created by: ChrisR

1

8

#### Problem 52288. List Honaker primes

Created by: ChrisR

2

9

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

Created by: ChrisR

0

15

#### Problem 50948. Identify prime words

Created by: ChrisR

Tags primes, strings

2

9

#### Problem 52639. Determine whether a number is unprimeable

Created by: ChrisR

3

10

#### Problem 47793. Find the smallest prime with n inside

Created by: ChrisR

3

15

#### Problem 47833. List the delete-a-digit primes

Created by: ChrisR

3

16

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

Created by: ChrisR

4

11

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

Created by: ChrisR

0

6

#### Problem 51241. Compute home primes in a given base

Created by: ChrisR

0

6

#### Problem 52183. List the nth prime quartet prefix

Created by: ChrisR

0

5

#### Problem 51758. List Proth primes

Created by: ChrisR

Tags primes

0

7

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

Created by: ChrisR

1

8

#### Problem 47895. List the dihedral primes

Created by: ChrisR

2

9

#### Problem 49783. List the good primes

Created by: ChrisR

Tags primes

1

10

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

Created by: ChrisR

2

7

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