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| Category | Match | Probability |
|---|---|---|
| 1 (5+C) | 5 numbers + 1 special | 1 / 31,625,100 |
| 2 (5) | 5 numbers | 1 / 3,513,900 |
| 3 (4+C) | 4 numbers + 1 special | 1 / 129,082 |
| 4 (4) | 4 numbers | 1 / 14,342 |
| 5 (3+C) | 3 numbers + 1 special | 1 / 2,689 |
| 6 (3) | 3 numbers | 1 / 299 |
| 7 (2+C) | 2 numbers + 1 special | 1 / 172 |
| 8 (2) | 2 numbers | 1 / 17 |
| Key | 1 / 10 |
El Gordo is a number draw where players select 5 numbers from 1 to 54.
Draws take place every Sunday.
The game offers 9 different prize tiers, from the jackpot down to smaller prizes.
With Lottofy you can bet on the world's biggest lotteries based on their official results — pick your lucky numbers and enjoy the thrill of international draws in a simple, fast and convenient way, wherever you are.
El Gordo de La Primitiva — "The Fat One of La Primitiva" — is one of Spain's most distinctive and rewarding weekly lotteries. Similar in spirit to La Primitiva but with its own unique format, El Gordo de La Primitiva is played exclusively on Sundays and offers a remarkably accessible prize structure: 9 prize categories across a 5/54 number format, including a Número Clave that gives every bet a 1 in 10 chance of winning the Reintegro, the lowest prize category, in every draw.
Each entry consists of selecting 5 numbers from 1 to 54 plus a Número Clave (Key Number) from 0 to 9. The combination of these six selections determines your prize category, with the jackpot reserved for players who match all 5 main numbers and the Número Clave. The largest set of numbers (1–54) and the Número Clave mechanic give El Gordo de La Primitiva its own distinct odds profile and prize distribution.
At Lottofy you can buy your El Gordo de La Primitiva bet quickly, securely and entirely online. As well as the classic single bet, Lottofy offers exclusive play modes — including multiple bets with formulas and Share50 — that give you smarter, more flexible ways to play.
How to Bet on El Gordo de La Primitiva: Bet Types
Lottofy gives you two main ways to play El Gordo de La Primitiva: the single bet, the classic and most straightforward option, and the multiple bet, designed for players who want to cover more combinations with a single bet.
Single Bet
The single bet is the traditional way to play. In one bet you can include between 1 and 6 independent entries. For each entry you select 5 numbers from 1 to 54. You also select one Número Clave from 0 to 9 — this is chosen once and is shared across all entries on the same bet. Every panel is a separate bet on the official draw with its own 5-number combination, but all share the same Número Clave.
It is the most direct way to play El Gordo de La Primitiva and the natural starting point for new players.
Multiple Bet: More Combinations, More Chances
The multiple bet takes your play further. Rather than being limited to 5 main numbers per panel, you can select more than 5 main numbers (and even more when using formula play) in a single entry. The system automatically generates every possible 5-number combination from your selection, covering a far wider spread of the draw in one go.
Multiple bet combinations available — straight play:
Main numbers selected | Bets generated |
6 | 6 |
7 | 21 |
8 | 56 |
9 | 126 |
10 | 252 |
11 | 462 |
As with single bets, you select one Número Clave that applies to all generated combinations within the multiple.
Two Ways to Place a Multiple Bet
Multiple bet — straight play Every combination generated by your main number selection is a separate bet on the official draw, all sharing the same Número Clave. This is the maximum-coverage option: you're paid the prize of every winning combination.
Multiple bet — formula play (exclusive to Lottofy) Formula play is one of Lottofy's most powerful and distinctive features. Formulas are mathematical algorithms that intelligently select a subset of all possible combinations from your chosen numbers, reducing the total number of bets required whilst maintaining a coverage percentage that you define yourself.
The result: you play a multiple with significantly fewer bets than straight play, keep high prize odds, and lower the overall cost of your bet. Available exclusively through Lottofy.
What Is the Número Clave?
The Número Clave (Key Number) is a number from 0 to 9 drawn from a completely separate drum after the 5 main numbers have been extracted. You select your Número Clave when placing your bet and it applies to all entries on your bet.
The Número Clave plays two distinct roles in El Gordo de La Primitiva:
Unlocking higher prize tiers: matching the Número Clave alongside your main number matches consistently unlocks the higher of two paired prize tiers — for example, matching 5 numbers plus the Número Clave wins Category 1 (Jackpot), while matching 5 numbers without it wins Category 2.
As a standalone Reintegro: if your Número Clave matches the one drawn — regardless of how many main numbers you matched — you win the Reintegro, a prize equal to the official price of one entry, which may differ from what you paid on Lottofy. Every bet has a 1 in 10 chance of matching the Número Clave in every draw, independently of the main number result.
Because you actively choose your Número Clave (rather than having it assigned automatically), it adds a strategic dimension: players can consider which Número Clave to select across their entries.
One Draw Per Week — Every Sunday
El Gordo de La Primitiva holds one draw per week, every Sunday. It is the sole El Gordo draw of the week — there are no midweek draws. This makes the weekly cycle clearly defined: one opportunity per week, every Sunday, with all players competing in the same single draw.
Choose How Many Weeks Your Bet Runs
At Lottofy you can schedule your El Gordo de La Primitiva entries for between 1 and 52 consecutive weeks with the same combinations. Playing multiple weeks at once brings clear advantages:
Your combinations are locked in without needing to revisit your purchase before each Sunday.
You avoid payment disruptions such as card expiry or other unexpected issues.
You can unlock discounts — the more weeks you choose in a single cycle, the greater the saving.
Auto-Renewal: Never Miss a Sunday
If you prefer to play continuously, activate auto-renewal. When your chosen cycle ends, your combinations renew automatically for the next one. You stay in every Sunday draw without interruption.
Share50: Win Beyond Your Own Combinations
Share50 is Lottofy's exclusive collective play feature, giving you the chance to benefit from other players' winnings as well as your own. The mechanics are completely transparent, and we take no commission on Share50 prizes:
You keep 50% of any prize generated by your own bets.
The remaining 50% goes into the shared fund and is distributed proportionally among all Share50 participants, based on the number of bets each player has contributed.
In return, you receive your proportional share of the 50% contributed by all other participants.
In practice: even if none of your own combinations wins in a particular draw, you can still receive a payout when other Share50 players have winning entries. And if your own combinations do win, you keep 50% of your own prize, after any reduction set out in our Terms.
We take no commission on Share50 prizes. All the prizes generated within Share50 are distributed among the participating players.
El Gordo de La Primitiva has 9 prize categories including the Reintegro tier, making it the lottery with the most prize tiers of any 5-number format on Lottofy. The Número Clave features in 7 of the 9 tiers, creating a layered prize ladder where matching the Número Clave consistently unlocks a more valuable prize than the equivalent main-number match without it.
Category | Main numbers matched | Número Clave matched | Odds | Prize |
1 — Jackpot | 5 | Yes | 1 : 31,625,100 | Jackpot |
2 | 5 | No | 1 : 3,513,900 | 22% of prize fund |
3 | 4 | Yes | 1 : 129,082 | 33% of prize fund |
4 | 4 | No | 1 : 14,342 | 6% of prize fund |
5 | 3 | Yes | 1 : 2,689 | 7% of prize fund |
6 | 3 | No | 1 : 299 | 8% of prize fund |
7 | 2 | Yes | 1 : 172 | 26% of prize fund |
8 | 2 | No | 1 : 6 | Fixed: €3.00 |
Reintegro | 0 | Yes | 1 : 10 | Fixed: €1.50 |
Prizes shown are the official prize per entry. Much like the tax Spain withholds from lottery prizes, the payout on large prizes is reduced; the exact reductions are set out in our Terms.
The jackpot (Category 1) is shared proportionally among all winning bets. Categories 2–7 are allocated as a percentage of the prize fund and divided among all winners in that tier per draw. Categories 8 and Reintegro pay fixed amounts. Category 3 carries the largest single fund allocation at 33%, reflecting the significant prize value of matching 4 numbers plus the Número Clave.
