Problems

1 – 26 of 26

Problem Title Likes Solvers Difficulty

Problem 3015. Sum all integers from 1 to 2^x

Created by: Mycah Robinson

Tags series, sum, integer

Problem 2496. Unusual Concatenations

Created by: Peter Cook

Tags integer

Problem 543. deconvolution

Created by: AMITAVA BISWAS

Tags convolution, algebra, polynomial

Problem 43283. Subtract integers and add doubles

Created by: Marc Jakobi

Tags integer, float, poor_problem_statement

Problem 1278. Find the nearest integer

Created by: Bruce Raine

Tags match, integer, poor_test_suite

280

Problem 3010. Self-similarity 1 - Every other term

Created by: goc3

Tags integer, sequence, self

Problem 1089. Create a random vector of integers with given sum

Created by: J-G van der Toorn

Tags vector, random, sum

Problem 3011. Self-similarity 2 - Every third term

Created by: goc3

Tags integer, sequence, self

Problem 47568. find the lowest number with given amount of integer factors

Created by: Samuel Ammann

Tags integer, factorization

Problem 44812. Draw Dominos

Created by: goc3

Tags game, integer, draw

Problem 44305. 5 Prime Numbers

Created by: goc3

Tags prime, primes, string

407

Problem 44068. The number of trailing zero digit of a factorial

Created by: Jihye Sofia Seo

Tags integer, number theory, factorial

Problem 3012. Self-similarity 3 - Every other pair of terms

Created by: goc3

Tags integer, self, similar

Problem 44065. Number of even divisors of a given number

Created by: Jihye Sofia Seo

Tags factor, integer, number theory

Problem 3001. Sphenic number sequence

Created by: goc3

Tags prime, number, factor

Problem 49835. Decimal to Binary conversion for Large Integers

Created by: Gifari Zulkarnaen

Tags binary, conversion, decimal

Problem 3016. Twin Primes

Created by: goc3

Tags prime, integer, sequence

Problem 42831. Integer complexity

Created by: HH

Tags numbers, integer, number theory

Problem 2800. arithmetic progression

Created by: Guillaume

Tags integer, arithmetic progression

Problem 3002. Not square-free number sequence

Created by: goc3

Tags square, number, integer

Problem 49788. Carmichael Number

Created by: Gifari Zulkarnaen

Tags math, exponential, integer

Problem 44071. Smallest n, for n! to have m trailing zero digits

Created by: Jihye Sofia Seo

Tags integer, factorial, factorisation

Problem 3003. Mobius function

Created by: goc3

Tags prime, number, factor

Problem 44789. Big Integer Sqrt

Created by: Binbin Qi

Tags integer, big, sqrt

Problem 42834. Integer complexity (Large numbers)

Created by: Peng Liu

Tags integer, number theory, complexity

Problem 42504. Data Regularization

Created by: Peng Liu

Tags matrix, integer, vectorization

1 – 26 of 26

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 3015. Sum all integers from 1 to 2^x

Problem 2496. Unusual Concatenations

Problem 543. deconvolution

Problem 43283. Subtract integers and add doubles

Problem 1278. Find the nearest integer

Problem 3010. Self-similarity 1 - Every other term

Problem 1089. Create a random vector of integers with given sum

Problem 3011. Self-similarity 2 - Every third term

Problem 47568. find the lowest number with given amount of integer factors

Problem 44812. Draw Dominos

Problem 44305. 5 Prime Numbers

Problem 44068. The number of trailing zero digit of a factorial

Problem 3012. Self-similarity 3 - Every other pair of terms

Problem 44065. Number of even divisors of a given number

Problem 3001. Sphenic number sequence

Problem 49835. Decimal to Binary conversion for Large Integers

Problem 3016. Twin Primes

Problem 42831. Integer complexity

Problem 2800. arithmetic progression

Problem 3002. Not square-free number sequence

Problem 49788. Carmichael Number

Problem 44071. Smallest n, for n! to have m trailing zero digits

Problem 3003. Mobius function

Problem 44789. Big Integer Sqrt

Problem 42834. Integer complexity (Large numbers)

Problem 42504. Data Regularization