#
DIFF.BLOG
New
Following
Discover
Jobs
More
Top Writers
Suggest a blog
Upvotes plugin
Report bug
Contact
About
Sign up
The home for great developer writing.
We surface the best developer writing from thousands of independent blogs, updated daily.
Join Diff.blog
TOPICS
Test whether a large integer is a square
·
John Cook
·
June 27, 2025, 1:06 a.m.
Computing
algorithms
mathematics
programming
Performance Optimization
Summary
The blog post discusses a fast algorithm for determining if a large integer is a perfect square by utilizing hexadecimal digit properties and square root calculations.
Read full post on www.johndcook.com →
MORE POSTS LIKE THIS
◦୦◦◯◦୦◦⊚⚪⊚◦୦◦◯◦୦◦᪣🞊᪣𝆯᪣🞊᪣ ᪣🞊᪣𝆯᪣🞊᪣◦୦◦◯◦୦◦⊚⚪⊚◦୦◦◯◦୦◦
⠀ ᯽ ᯽ ⠀ ·
Jun 14, 2026
oo
mathematics
synchronization of buckets filling and emptying
Graphthinking Blogspot ·
May 24, 2026
llm
mathematics
Problem 14: Check if a Number is Prime
Vicente G. Reyes ·
Feb 16, 2026
Python
Learning
Golden iteration
John Cook ·
Dec 12, 2025
Math
mathematics
[Math] Logarithms for programmers
Dennis Yurichev ·
Apr 10, 2025
Logarithms
mathematics
SIMD Masking
Casey Muratori ·
Aug 31, 2026
SIMD
programming
Discover more posts →
AUTHOR
Sponsored
Zulip
Organized team chat for people who take work seriously. Topic-based threading keeps conversations focused.
Try Zulip
Become a sponsor →
RECENT POSTS FROM THE AUTHOR
Choose how you want to continue.
Continue with GitHub
Continue with Google