Magic Numbers II

Curated by : goc3

Average Problem Difficulty:

Additional challenges testing or generating numbers with special characteristics.

Magic Numbers II Master

+50 points

Problem Title	Likes	Solvers
Problem 170. First N Perfect Squares Created by: @bmtran (Bryant Tran) Tags math, perfect squares, integers	6	878
Problem 1012. Determine if input is a perfect number Created by: Binbin Qi Tags mod sum, perfect	4	242
Problem 249. Project Euler: Problem 9, Pythagorean numbers Created by: Doug Hull Tags projecteuler	10	1301
Problem 273. Recurring Cycle Length (Inspired by Project Euler Problem 26) Created by: @bmtran (Bryant Tran) Tags project euler, digits, decimals	3	131
Problem 365. Numbers with prime factors 2, 3 and 5. Created by: elias GR Tags primes, factors	4	578
Problem 525. Mersenne Primes Created by: Drew Weymouth Tags math, prime, integers	6	840
Problem 1008. Determine if input is a Narcissistic number Created by: Binbin Qi Tags mod floor	2	200
Problem 1082. Lychrel Number Test (Inspired by Project Euler Problem 55) Created by: @bmtran (Bryant Tran) Tags projecteuler, plus15	1	102
Problem 1096. Largest Twin Primes Created by: Des Mc Manus Tags primes	4	832
Problem 1162. Happy 2013... Created by: James Tags new year, different digits, 2013	10	185
Problem 1281. Fermat's Last Theorem - Fermat's conjecture Created by: Marco Castelli Tags matlab, find, sum	3	101
Problem 1298. P-smooth numbers Created by: Richard Zapor Tags primes, find, mod	1	88
Problem 1407. Is it an Armstrong number? Created by: Harish Maradana Tags armstrong no	3	328
Problem 1477. Champernowne Constant Created by: G K Tags math	3	79

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Recent Activity

	Petros HCT2025 submitted Solution 14609222 to Problem 170. First N Perfect Squares on 15 Apr 2025 at 8:19
	Natalie Mujica-Schwahn submitted Solution 14605872 to Problem 170. First N Perfect Squares on 10 Apr 2025 at 22:16
	Aaryaa submitted Solution 14584329 to Problem 170. First N Perfect Squares on 24 Mar 2025 at 7:42
	Theo submitted Solution 14576672 to Problem 170. First N Perfect Squares on 16 Mar 2025
	Paul Bower submitted Solution 14576503 to Problem 1012. Determine if input is a perfect number on 15 Mar 2025

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