Life & fun · alternatives · 2026
24 alternatives to Primeval Numbers
Primeval Numbers is a tool for exploring and understanding prime numbers. It helps users discover patterns in prime number sequences and learn about their mathematical properties through interactive visualization. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Primeval Numbers launched in 2024; newer entries below may have overtaken it.
- 1
Visualization of density of prime numbers of different types.
2017 · prime-numbers.info · its alternatives →
- 2
Everything you need to know about any number
Jul 2026 · aboutnumber.com · its alternatives →
- 3
- 4PN
Hello HN, I made this simple notepad for writing down whatever comes to mind. The goal is to force you to not get hung up on what you’ve already written. There’s no formatting, you can’t edit what you’ve typed, you can’t select text or move your caret around. There’s no backspace, delete, undo/redo, or paste. You can’t even see any words except the one you’re currently typing, and when you’re done with it, it fades away. The text is all still there, just invisible. You can save everything you’ve written as a .txt if you want, or just empty your thoughts and let them disappear forever.…
2025 · enda.sh · its alternatives →
- 5IF
2015 · david-peter.de · its alternatives →
- 6EM
Dec 2025 · coe.psu.ac.th · its alternatives →
- 7
Advanced Mathematics Library for Node.js and JavaScript - numbers/numbers.js
2012 · github.com · its alternatives →
- 8
- 9ZA
2015 · zero.karaniwan.org · its alternatives →
- 10
Intuitive Math Descriptions
2018 · intuitive-math.club · its alternatives →
- 11
All-in-One Solution for Every Calculation. primecalculator
Nov 2025 · primecalculator.net · its alternatives →
- 12
Algebraic Number Theory package. Contribute to louisabraham/algnuth development by creating an account on GitHub.
2018 · github.com · its alternatives →
- 13
Hey there! I'm the brains behind the math crossword game on my site. This game is all about making math a little more fun – users just drag and drop numbers to fill in the blanks and move on to the next level if they get it right. Let me know if face any issues or have any suggestions! :)
2024 · scientific.place · its alternatives →
- 14
I built a Proth prime tester on a Zybo Z7-20 FPGA ($200 board) and found a new 1,123-digit prime: 2079 * 2^3718 + 1. Proth primes are numbers of the form k * 2^n + 1. They have a neat property: Proth's theorem gives you a deterministic proof of primality, not just a probabilistic test. If you can find an integer a where a^((p-1)/2) = -1 mod p, the number is proven prime. No "probably" about it. The interesting part is the hardware. The core is a 4096-bit Montgomery CIOS multiplier running on a Zynq-7020. It uses 28 DSP48E1 slices and runs at 74 MHz, doing one full modular multiply in…
Feb 2026 · github.com · its alternatives →
- 15
Credit goes to the contributors of https://github.com/enjeck/num2math for making the tool's core.
2024 · scientific.place · its alternatives →
- 16
A font that renders numbers as medieval Cistercian numerals
Feb 2026 · bobbiec.github.io · its alternatives →
- 17CP
Evaluate a degree-n polynomial with about n/2 multiplications. Type a polynomial, pick ℚ, ℝ, ℂ, a Mersenne prime or a binary field, and get the preprocessed evaluation chain as math, C code or a circuit — everything runs in your browser.
Sep 2026 · thomasahle.com · its alternatives →
- 18IP
2018 · just-taking-a-ride.com · its alternatives →
- 19
Math is part of everyday life—from cooking to shopping to telling time. This friendly guide shows how simple, useful, and even fun math can really be.
2020 · mathpendium.org · its alternatives →
- 20AO
2013 · zachschnell.com · its alternatives →
- 21
🧮 Small library for big decimal numbers. Contribute to bpierre/dnum development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 22
Practice listening to numbers, phone numbers, and times in 26+ languages including Spanish, French, Japanese, and Chinese. Train with region-specific pronunciation, adjustable speed, and real-world number comprehension exercises.
2017 · foreignnumbers.com · its alternatives →
- 23IP
Interactive toy for visualizing relationship between polynomial roots and coefficients
2017 · duetosymmetry.com · its alternatives →
- 24
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →