Generate Deficient Numbers
Generate deficient numbers, whose proper divisors add up to less than the number itself.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Calculated locally in your browser. Nothing is uploaded.
How to Use Generate Deficient Numbers
- Set how many. The count of deficient numbers to list.
- Pick a separator. Comma, new line, or space.
- Generate. The first deficient numbers are listed in order.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
What is a deficient number?
A number whose proper divisors add up to less than the number itself. Most numbers, including every prime, are deficient.
Is 1 deficient?
Yes. It has no proper divisors that add up to it, so it counts as deficient.
How many can I list?
Up to two thousand at once, listed from the smallest upward.
Is anything uploaded?
No. The list is generated in your browser, so nothing leaves the tab.
Is it free?
Yes. Every tool here is free to use with no sign up.
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