Random number generator 4-20 — Gosloto 4-20
Random number generator creates sequences of digits in a specific range or from a list
Number range can be from minus to plus 999,999,999
Numbers can be separated by space, comma or new line
Numbers quantity
Options
Number generator for 4-20 lottery — Gosloto 4-20
The number generator for 4-20 lottery creates random combinations according to the rules of Gosloto 4-20 format: 4 numbers from the range 1–20. Gosloto 4 out of 20 is one of the popular Russian lotteries.
Each combination contains exactly 4 unique numbers from 1 to 20. Numbers do not repeat within a single combination. The generator strictly follows the lottery rules.
The cryptographically strong Crypto.getRandomValues() API ensures true randomness. Zero-knowledge architecture — combinations are generated on your device and not transmitted to the server.
Features
- Exact compliance with lottery rules: 4, 20
- Adjustable number of combinations
- No repetitions within a combination
- Zero-knowledge: data never leaves your device
- Cryptographically strong API — true randomness
- Instant copying of one or all combinations
How it works
Create a 4-20 combination in four steps
Intuitive interface lets you get results in seconds.
01
Select format
Format 4-20 is already selected. The algorithm is tuned to the rules of this lottery: 4 numbers out of 20.
02
Set the quantity
Specify how many combinations to generate — from 1 to 100. The tool adapts to your choice.
03
Run generation
Press the button. The cryptographically strong algorithm will create random combinations that comply with the rules.
04
Copy the result
Combinations are displayed immediately. You can copy them one by one or all at once.
About the format
Format 4-20
Format 4-20: 4 random numbers from the range 1–20. Total possible combinations: 4,845.
Number of combinations
Number of possible combinations: 4,845 — exactly that many unique sets can be made in this format.
Probability of guessing
Probability of guessing all numbers — 1 in 4,845. The more numbers you need to guess, the lower the probability.
Fair randomness
Each combination is generated via Crypto.getRandomValues(). No pseudo-random algorithms or manipulation.
Zero-knowledge
Combinations are generated on your device and not transmitted to the server. Complete privacy.
Advantages
Why choose the 4-20 format
4,845 unique combinations — each has equal chances.
Proven rules
The 4-20 format is used in official lotteries. The generator strictly follows the rules: exactly 4 numbers from range 1–20.
Zero-knowledge architecture
Client-side generation. Combinations never leave your device. Impossible to intercept or tamper with.
Convenient copying
Each combination is a clickable chip. Copy one by one or all at once in the desired format.
Endless combinations
Each generation creates unique combinations. Repetition is virtually impossible.
Frequently asked questions
About the 4-20 format
What does the 4-20 format mean?
The 4-20 format means that 4 random numbers are selected from the range of 1 to 20. Each number appears only once within a single combination.
How many combinations can be created?
Total number of unique combinations: 4,845. Each generation creates a random sample from this set.
Can it be used for a real lottery?
Yes, the combinations comply with the rules of the 4-20 format. However, the generator does not guarantee a win — these are random numbers, not a prediction of results.
How are combinations different from random numbers?
In the 4-20 format, numbers do not repeat within a single combination and strictly correspond to the range 1–20. A regular generator may produce repeating numbers.