# Sosu der

> ～素数クイズ～

Canonical page: [https://chrome-stats.com/d/id6483364985](https://chrome-stats.com/d/id6483364985)

## Overview

- **ID:** `id6483364985`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Hirobumi Onishi
- **Category:** Puzzle
- **Version:** 1.3
- **Last updated:** 2026-08-02
- **First published:** 2024-05-16
- **Size:** 140 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sosu-der/id6483364985)
- **Website:** [https://ittonijo-studio.com/products/sosu-der](https://ittonijo-studio.com/products/sosu-der)
- **Privacy policy:** [https://ittonijo-studio.com/products/sosu-der/privacy](https://ittonijo-studio.com/products/sosu-der/privacy)

## Description

This app is a quiz application that determines whether a number is prime or composite and swipes the correct answer.

A prime number is a natural number greater than 1 that is not divisible by any other number except 1 and the number itself. For example, 2, 3, 5, and 7 are single-digit prime numbers.

Composite numbers (composite numbers) are natural numbers greater than 1 that are not prime and are represented by the product of smaller natural numbers (e.g., 4 = 2 x 2, 6 = 2 x 3).

Through this app, you can test your judgment and reflexes while having fun learning these mathematical concepts.

... How many two-digit, three-digit, and four-digit prime numbers do you know?

Translated with www.DeepL.com/Translator (free version)

## Rankings

- #2,206,509 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6483364985)