Problems

1 – 21 of 21

Problem Title Likes Solvers Difficulty

Problem 43179. Red and green towers

Created by: Giovanni Mottola

Tags arithmetic, number theory

Problem 45189. Double Factorial

Created by: Mehmet OZC

Tags number theory, factorial, double factorial

Problem 45224. Wythoff Sequence

Created by: Asif Newaz

Tags number theory, sequence, oeis

Problem 46287. find the answer

Created by: Maryam HCTRAK Alhebsi

Tags number theory

Problem 46305. find the value

Created by: Maryam HCTRAK Alhebsi

Tags number theory

Problem 2738. Sideways sum

Created by: Jan Orwat

Tags easy, number theory, pop series

Problem 43082. Reverse digits of a number

Created by: Mohammad Haghighat

Tags math, numbers, basic matlab

Problem 47803. Check if the input is a strong prime

Created by: Mehmet OZC

Tags primes, number theory, strong prime

Problem 43130. Nth root

Created by: Abhishek Jain

Tags numbers, root, number theory

Problem 46054. Count trailing zeros in a primorial

Created by: ChrisR

Tags primes, number theory, primorial

Problem 49738. Determine whether a prime is Pythagorean

Created by: ChrisR

Tags primes, pythagoras, number theory

Problem 46000. Compute the harmonic numbers

Created by: ChrisR

Tags number theory

Problem 46639. Transform a Decimal number into a Septimal number

Created by: Syed Shahed

Tags numbers, number theory

Problem 52060. Identify Ruth-Aaron numbers

Created by: ChrisR

Tags number theory, baseball, factor sum

Problem 42865. Find the sum of n squares

Created by: William Mitchell

Tags number theory

148

Problem 44748. Amicable numbers

Created by: cdeliu

Tags number theory, divisors

Problem 52594. Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence

Created by: Ramon Villamangca

Tags easy, sequences, fibonacci

Problem 52497. Easy Sequences 3: Prime 44-number Squares

Created by: Ramon Villamangca

Tags easy, sequences, primes

Problem 45960. Set the Euler-Mascheroni constant with an identity using available MATLAB functions

Created by: ChrisR

Tags numbers, number theory

Problem 2369. Tribute to Ramanujan

Created by: rifat

Tags number theory

Problem 51570. Count numbers whose reciprocals' decimal expansions terminate

Created by: ChrisR

Tags decimals, number theory

1 – 21 of 21

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 43179. Red and green towers

Problem 45189. Double Factorial

Problem 45224. Wythoff Sequence

Problem 46287. find the answer

Problem 46305. find the value

Problem 2738. Sideways sum

Problem 43082. Reverse digits of a number

Problem 47803. Check if the input is a strong prime

Problem 43130. Nth root

Problem 46054. Count trailing zeros in a primorial

Problem 49738. Determine whether a prime is Pythagorean

Problem 46000. Compute the harmonic numbers

Problem 46639. Transform a Decimal number into a Septimal number

Problem 52060. Identify Ruth-Aaron numbers

Problem 42865. Find the sum of n squares

Problem 44748. Amicable numbers

Problem 52594. Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence

Problem 52497. Easy Sequences 3: Prime 44-number Squares

Problem 45960. Set the Euler-Mascheroni constant with an identity using available MATLAB functions

Problem 2369. Tribute to Ramanujan

Problem 51570. Count numbers whose reciprocals' decimal expansions terminate