David Hill

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125

Badges

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1 – 50 of 58

Problem 60834. Bell 202 Decoder

Created by: David Hill

Tags afsk, bell202

4

Solvers

45

Size

4

Solvers

45

Size

Problem 60743. Bit Stream conversion to Audio Frequency Shift Key using Bell 202 (Modem)

Created by: David Hill

Tags bell 202, afsk

3

Solvers

97

Size

3

Solvers

97

Size

Problem 60171. Compute the Ramanujan tau function for large numbers

Created by: David Hill

Tags ramanujan, tau

2

Solvers

248

Size

2

Solvers

248

Size

Problem 59536. Integrate a Power-Tower of a Function

Created by: David Hill

Tags power tower

1

Solver

92

Size

1

Solver

92

Size

Problem 59492. Quasi-Carmichael Numbers

Created by: David Hill

Tags quasi-carmichael numbers

2

Solvers

96

Size

2

Solvers

96

Size

Problem 59464. Minimum, Maximum, and Number of Primitive Roots Modulo (m)

Created by: David Hill

Tags primitive roots

1

Solver

385

Size

1

Solver

385

Size

Problem 59459. Carmichael Function

Created by: David Hill

Tags carmichael

6

Solvers

60

Size

6

Solvers

60

Size

Problem 56298. Sum of Consecutive Positive Integers Equals Product of Limiting Values

Created by: David Hill

Tags integers

4

Solvers

112

Size

4

Solvers

112

Size

Problem 56293. Heronian Triangles with Consecutive Integral Sides and Integral Area

Created by: David Hill

Tags triangle, heronian

4

Solvers

59

Size

4

Solvers

59

Size

Problem 55495. Quaternions to Rotation Matrices

Created by: David Hill

Tags quaternions

4

Solvers

127

Size

4

Solvers

127

Size

Problem 55490. Rotation Matrix to Euler Angles

Created by: David Hill

Tags euler angles

6

Solvers

31

Size

6

Solvers

31

Size

Problem 55340. Solutions to Generalized Pell Equation or Quadratic Diophantine

Created by: David Hill

Tags diophantine, pell

1

Solver

963

Size

1

Solver

963

Size

Problem 55330. Convert Periodic Continued Fraction to Fractional Radical Representation

Created by: David Hill

Tags continued fractions

1

Solver

281

Size

1

Solver

281

Size

Problem 55040. B-Zuckerman Numbers

Created by: David Hill

Tags zuckerman number

3

Solvers

53

Size

3

Solvers

53

Size

Problem 55035. B-Harshad Numbers

Created by: David Hill

Tags harshad numbers

4

Solvers

46

Size

4

Solvers

46

Size

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

Created by: David Hill

Tags number theory, smooth number

4

Solvers

50

Size

4

Solvers

50

Size

Problem 54280. N-th Digit of all Write-Down Numbers

Created by: David Hill

Tags large numbers

3

Solvers

147

Size

3

Solvers

147

Size

Problem 54214. To Bet or Not to Bet

Created by: David Hill

Tags poker, games

1

Solver

806

Size

1

Solver

806

Size

Problem 54149. Determine Poker Hand Winner

Created by: David Hill

Tags poker, games

3

Solvers

282

Size

3

Solvers

282

Size

Problem 54010. Evaluate Poker Hand

Created by: David Hill

Tags poker, games

4

Solvers

195

Size

4

Solvers

195

Size

Problem 53955. Determine Fundamental Solution of Pell Equation

Created by: David Hill

Tags number theory, pell

2

Solvers

237

Size

2

Solvers

237

Size

Problem 53705. Multiply Large Hexadecimal Numbers

Created by: David Hill

Tags multiply, hexadecimal, large integers

5

Solvers

68

Size

5

Solvers

68

Size

Problem 52090. Convert Thermocouple output voltage (in mV) to Temperature (in C)

Created by: David Hill

Tags thermocouple

3

Solvers

60

Size

3

Solvers

60

Size

Problem 52075. Radioisotope Thermoelectric Generator (RTG)

Created by: David Hill

Tags radioisotope thermoelectric generator

3

Solvers

68

Size

3

Solvers

68

Size

Problem 52065. Nuclear Binding Energy

Created by: David Hill

Tags nuclear binding energy

5

Solvers

104

Size

5

Solvers

104

Size

Problem 51188. Number of Primitive Roots and Cyclic

Created by: David Hill

Tags primitive roots

2

Solvers

147

Size

2

Solvers

147

Size

Problem 51183. Convert Hexadecimal Number to Decimal Number

Created by: David Hill

Tags decimal, hexadecimal

10

Solvers

14

Size

10

Solvers

14

Size

Problem 47864. Calculate the Surface Area of an Ellipsoid

Created by: David Hill

Tags ellipsoid, surface area

8

Solvers

85

Size

8

Solvers

85

Size

Problem 47425. Uranium–Lead Dating

Created by: David Hill

Tags radiometric dating

5

Solvers

51

Size

5

Solvers

51

Size

Problem 47123. Determine the Base of the Equation Provided

Created by: David Hill

Tags base

4

Solvers

169

Size

4

Solvers

169

Size

Problem 47043. Find the Arc Length of the Curve Defined by the Parametric Functions

Created by: David Hill

Tags arc length

6

Solvers

12

Size

6

Solvers

12

Size

Problem 46898. Sum of all the divisors of n

Created by: David Hill

Tags divisors

22

Solvers

39

Size

22

Solvers

39

Size

Problem 46761. Inverse Number Theoretic Transform (iNTT)

Created by: David Hill

Tags inverse number theoretic transform

1

Solver

175

Size

1

Solver

175

Size

Problem 46696. Number Theoretic Transform (NTT)

Created by: David Hill

Tags ntt, number theoretic transform

2

Solvers

121

Size

2

Solvers

121

Size

Problem 46681. Determine the kth Primitive Root of Unity

Created by: David Hill

Tags root-of-unity

4

Solvers

89

Size

4

Solvers

89

Size

Problem 46636. Montgomery Multiplication

Created by: David Hill

Tags montgomery multiplication

3

Solvers

97

Size

3

Solvers

97

Size

Problem 46633. Montgomery Reduction Algorithm (REDC)

Created by: David Hill

Tags montgomery reduction

4

Solvers

51

Size

4

Solvers

51

Size

Problem 46630. Find RRp-NNp=1 given gcd(R,N)=1

Created by: David Hill

Tags greatest common divisor

12

Solvers

33

Size

12

Solvers

33

Size

Problem 46627. Output the Montgomery Form of the Input Matrix

Created by: David Hill

Tags montgomery

26

Solvers

15

Size

26

Solvers

15

Size

Problem 45362. RIPEMD160 Hash

Created by: David Hill

Tags hash, ripemd160

7

Solvers

39

Size

7

Solvers

39

Size

Problem 45320. SHA256 Hashing

Created by: David Hill

Tags hash, sha256

5

Solvers

45

Size

5

Solvers

45

Size

Problem 45243. Binary Array to Hex Representation

Created by: David Hill

Tags binary to hexadecimal

11

Solvers

14

Size

11

Solvers

14

Size

Problem 45242. String to Binary Representation

Created by: David Hill

Tags strings to binary

16

Solvers

12

Size

16

Solvers

12

Size

Problem 45213. AES-256 KeyExpansion()

Created by: David Hill

Tags cryptography, advanced encryption standard

2

Solvers

146

Size

2

Solvers

146

Size

Problem 45212. AES MixColumns() Transformation

Created by: David Hill

Tags cryptography, advanced encryption standard

2

Solvers

229

Size

2

Solvers

229

Size

Problem 45211. AES SubBytes() Transformation

Created by: David Hill

Tags cryptography, advanced encryption standard

6

Solvers

19

Size

6

Solvers

19

Size

Problem 45200. Elliptic Curve Cryptography (ECC) Point Addition

Created by: David Hill

Tags elliptic curve cryptography

10

Solvers

106

Size

10

Solvers

106

Size

Problem 45187. Combinations using Stirling numbers of the second kind

Created by: David Hill

Tags combinations, stirling numbers

7

Solvers

36

Size

7

Solvers

36

Size

Problem 45180. All flights lead to Idaho Falls

Created by: David Hill

Tags spherical trigonometry, great circles

4

Solvers

137

Size

4

Solvers

137

Size

Problem 44972. Area of Triangle with Oblique Coordinates

Created by: David Hill

Tags area of triangle

11

Solvers

25

Size

11

Solvers

25

Size

1 – 50 of 58