Number Draw Without Repeats
Create an integer number pool and draw one number or a batch at a time. Numbers stay out of the pool for the rest of the session, with every round saved in order.
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Set up your number pool
Both endpoints are included. Use whole numbers from −9,007,199,254,740,991 to 9,007,199,254,740,991, with at most 10,000 numbers in the pool.
Restart and Reset both erase the history and return all numbers to the pool. Reset also unlocks the range fields.
How to draw numbers across rounds
- Enter the lowest and highest integers. Both endpoints count, and the range can contain up to 10,000 numbers.
- Start a session to shuffle and lock the number pool.
- Draw one number or choose a batch size no larger than the remaining pool. Continue drawing without repeats across rounds.
- Review the chronological history, then copy or download it. Restart the same range or reset to edit the range when you need a fresh session.
When to use a sequential number draw
- Draw student numbers 1–30 one at a time for classroom presentations without calling anyone twice.
- Assign numbered tasks in several batches from 1–100 while keeping earlier assignments out of later draws.
- Choose practice questions from −20 to 20, including zero, and save the order as a text file.
Frequently asked questions
Can a number appear twice?
Each integer appears at most once during a session, even across separate draw buttons and batches. Restarting or resetting creates a new session where previously drawn numbers can appear again.
How is this different from a random number generator?
This tool remembers the remaining pool across rounds. A regular random number generator usually creates a fresh set on each click, so numbers from earlier results can reappear.
Can I change the range during a session?
The range fields stay locked during a session. Use Reset and edit range to clear the history and unlock them. Restart same range clears the history and reshuffles the existing range.
What happens if my batch is too large?
You will see an error and the pool stays unchanged. Lower the batch size to the number remaining or draw one number at a time.
Will my session be saved after I leave?
No. The session lives in the current page and is lost when you reload or leave. Copy or download the history first if you need a record.
The number pool and draw history are processed in your browser. Sessions are not saved by this tool; copy or download your history before reloading. Usage analytics may record the tool action and counts, but not your entered range or drawn numbers.
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