Prime numbers properties I

Average Problem Difficulty:

The actual sole property of prime numbers is by definition they have one and unique divisor else than themselves ;-) However this group hosts cody problems about some historical formulas used to compute some prime numbers. I wish all of you to simultaneously enjoy solving my problems, learn new interesting notions and Matlab coding tricks. I welcome your feedbacks and remarks for me to improve. Please do not hesitate to signal me an error if you find one. Please like if you liked. Thank you :-) Edit : you will find plenty of some relative functions in my file exchange ! Just have a look at it ;-)

Community Group Solver

+50 points

Problem Title	Likes	Solvers
Problem 60941. Prime numbers which are the difference of two consecutive cubes Created by: Nicolas Douillet Tags math, prime, primes	2	31
Problem 60940. Find the first occurence of a given gap between two consecutive prime numbers Created by: Nicolas Douillet Tags math, primes, distance	2	26
Problem 60939. Frequencies of prime gaps Created by: Nicolas Douillet Tags math, prime, distance	3	30
Problem 60942. Euler primes Created by: Nicolas Douillet Tags math, primes, numbers	2	26
Problem 60943. Ulam primes second formula Created by: Nicolas Douillet Tags math, primes, numbers	1	22
Problem 60944. Ulam primes first formula Created by: Nicolas Douillet Tags math, prime, primes	2	22
Problem 60946. Fermat primes Created by: Nicolas Douillet Tags math, primes, numbers	1	21
Problem 60947. Euclid primes Created by: Nicolas Douillet Tags math, primes, numbers	1	18
Problem 60948. Check p² = 24k + 1, p > 3, the 'golden prime squares' equation Created by: Nicolas Douillet Tags math, primes, integers	3	23
Problem 60949. Check the integers additive decomposition conjecture Created by: Nicolas Douillet Tags math, primes, integers	1	18

Recent Group Finishers17

Recent Activity

Armando Longobardi submitted Solution 15124881 to Problem 60947. Euclid primes

on 9 Jun 2026

Armando Longobardi submitted Solution 15124881 to Problem 60947. Euclid primes

on 9 Jun 2026

Armando Longobardi submitted Solution 15124880 to Problem 60946. Fermat primes

on 9 Jun 2026

Armando Longobardi submitted Solution 15124875 to Problem 60944. Ulam primes first formula

on 9 Jun 2026

Armando Longobardi submitted Solution 15124871 to Problem 60943. Ulam primes second formula

on 9 Jun 2026

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