Cody

# Problems

1 – 32 of 32
 Problem Title Likes Solvers Difficulty

#### Problem 53810. List the Beatriz numbers

Created by: ChrisR

2

4

#### Problem 1826. Find vampire numbers

Created by: Andrew Newell

9

254

#### Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

0

6

#### Problem 52614. Easy Sequences 12: 50th Prime

Created by: Ramon Villamangca

0

3

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

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

#### Problem 52764. Easy Sequences 24: Number of Coprime Lattice Points

Created by: Ramon Villamangca

0

3

#### Problem 52784. Easy Sequences 38: Prime Number Delta

Created by: Ramon Villamangca

1

3

#### Problem 52804. Easy Sequences 29: Odd proper divisors of odd proper divisors

Created by: Ramon Villamangca

1

3

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

Created by: Ramon Villamangca

1

3

#### Problem 53119. Easy Sequences 53: Greatest Proper Divisor

Created by: Ramon Villamangca

3

3

#### Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

1

15

#### Problem 52729. Easy Sequences 21: Combinatorial Summations

Created by: Ramon Villamangca

2

3

#### Problem 52769. Easy Sequences 22: Sum of Proper Fractions

Created by: Ramon Villamangca

1

4

#### Problem 53079. Easy Sequences 50: Blocked Gaussian Integers

Created by: Ramon Villamangca

1

2

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

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

#### Problem 52861. Easy Sequences 37: Natural Factorable Polynomials

Created by: Ramon Villamangca

1

3

#### Problem 52866. Easy Sequences 36: Hyperbolic Lattice Points

Created by: Ramon Villamangca

0

4

#### Problem 2160. The 17x17 Problem

Created by: Ned Gulley

1

7

#### Problem 44788. Find the right number make the equation

Created by: Binbin Qi

2

9

#### Problem 52567. Easy Sequences 7: Easy as Composite Pi

Created by: Ramon Villamangca

0

2

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

Created by: Ramon Villamangca

1

4

#### Problem 52684. Easy Sequences 17: Mu Variant Function

Created by: Ramon Villamangca

0

2

#### Problem 52834. Easy Sequences 32: Almost Pythagorean Triples

Created by: Ramon Villamangca

2

3

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

Created by: Ramon Villamangca

0

3

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

Created by: Ramon Villamangca

0

1

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

Created by: Ramon Villamangca

1

3

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

Created by: Ramon Villamangca

1

2

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

Created by: Ramon Villamangca

0

1

#### Problem 53740. Easy Sequences 59: Almost Twin Primes

Created by: Ramon Villamangca

1

2

#### Problem 53745. Easy Sequences 60: Almost Cube Root

Created by: Ramon Villamangca

1

2

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

Created by: Ramon Villamangca

0

1

#### Problem 51580. Construct a continued fraction for a square root

Created by: ChrisR

2

4

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