Problems

1 – 41 of 41

Problem Title Likes Solvers Difficulty

Problem 55370. Easy Sequences 69: Radix Economy of Factorials

Created by: Ramon Villamangca

Tags easy, basics, number theory

Problem 52724. Easy Sequences 20: Counting Prime-sided Rectangles

Created by: Ramon Villamangca

Tags easy, geometry, area

Problem 53810. List the Beatriz numbers

Created by: ChrisR

Tags primes, number theory, sequence

Problem 1826. Find vampire numbers

Created by: Andrew Newell

Tags factors, number theory

278

Problem 52978. Easy Sequences 44: Finding the Smallest Number whose Cube is divisible by a Factorial

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53119. Easy Sequences 53: Greatest Proper Divisor

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 42834. Integer complexity (Large numbers)

Created by: Peng Liu

Tags integer, number theory, complexity

Problem 52819. Easy Sequences 30: Nearly Pythagorean Triangles

Created by: Ramon Villamangca

Tags easy, geometry, number theory

Problem 51580. Construct a continued fraction for a square root

Created by: ChrisR

Tags number theory, continued fractions, u. surrey

Problem 52709. Easy Sequences 19: Length of Prime-sided Rectangle with Maximum Area

Created by: Ramon Villamangca

Tags easy, geometry, area

Problem 52729. Easy Sequences 21: Combinatorial Summations

Created by: Ramon Villamangca

Tags easy, combinatorics, number theory

Problem 53079. Easy Sequences 50: Blocked Gaussian Integers

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53955. Determine Fundamental Solution of Pell Equation

Created by: David Hill

Tags number theory, pell

Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

Tags number theory, vampire

Problem 52769. Easy Sequences 22: Sum of Proper Fractions

Created by: Ramon Villamangca

Tags easy, number theory, sequence

Problem 54800. Consecutive Pairs of Smooth Numbers from Set of Prime Numbers

Created by: David Hill

Tags number theory, smooth number

Problem 52866. Easy Sequences 36: Hyperbolic Lattice Points

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 52861. Easy Sequences 37: Natural Factorable Polynomials

Created by: Ramon Villamangca

Tags easy, algebra, number theory

Problem 52567. Easy Sequences 7: Easy as Composite Pi

Created by: Ramon Villamangca

Tags easy, sequences, primes

Problem 2160. The 17x17 Problem

Created by: Ned Gulley

Tags 17x17, number theory

Problem 56050. Easy Sequences 73: Emergence of Fibonacci Insects

Created by: Ramon Villamangca

Tags easy, fibonacci, number theory

Problem 44788. Find the right number make the equation

Created by: Binbin Qi

Tags number theory, positive number, Diophantine equations

Problem 52659. Easy Sequences 15: Pythagorean Area with maximum Hypotenuse

Created by: Ramon Villamangca

Tags easy, geometry, number theory

Problem 52684. Easy Sequences 17: Mu Variant Function

Created by: Ramon Villamangca

Tags easy, sequences, function

Problem 52834. Easy Sequences 32: Almost Pythagorean Triples

Created by: Ramon Villamangca

Tags easy, geometry, number theory

Problem 52859. Easy Sequences 35: Cutting a donut to Semi-prime pieces

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 52990. Easy Sequences 46: Semi-prime Leap Year Pairs

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53009. Easy Sequences 48: Prime Big Omega of Factorial Sequence

Created by: Ramon Villamangca

Tags easy, primes, number theory

Problem 53125. Easy Sequences 54: Product of Products of Proper Divisors

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53730. Easy Sequences 57: "Pretty-gorean" Triangles?

Created by: Ramon Villamangca

Tags easy, geometry, number theory

Problem 53740. Easy Sequences 59: Almost Twin Primes

Created by: Ramon Villamangca

Tags easy, primes, number theory

Problem 53745. Easy Sequences 60: Almost Cube Root

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53750. Easy Sequences 63: Base-63 Arithmetic Functions

Created by: Ramon Villamangca

Tags easy, basics, number theory

Problem 53905. Easy Sequences 64: Base-14 Arithmetic Function

Created by: Ramon Villamangca

Tags easy, basics, number theory

Problem 53930. Easy Sequences 65: Fractional Part of Square Roots

Created by: Ramon Villamangca

Tags easy, number theory, simple

Problem 53965. Easy Sequences 67: Project Euler Problem 1 - Not Again!!!

Created by: Ramon Villamangca

Tags easy, projecteuler, number theory

1 – 41 of 41

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