Lotto 6/45: Exact Combinations and Draw-Only Bonus
Lotto 6/45 selects six distinct numbers from 45 in South Korea. The additional draw-only bonus number is used for lower-tier matching; it is not another number a player chooses for the jackpot.
- Review jurisdiction
- South Korea
- Base number format
- 6 from 45. No separately selected bonus pool.
- Official jackpot odds
- 1 in 8,145,060
- Draw days
- Saturday
- Base price
- KRW 1,000
- Price scope
- South Korea, one game.
- Last reviewed
How the jackpot odds are calculated
C(45,6) = 8,145,060. With uniform unordered selections and independent separate pools where applicable, one exact ticket has probability 1/8,145,060. The exact BigInt count matches the reviewed official jackpot denominator.
Static result: 1 in 8,145,060; official match.
A ticket probability and a number probability differ
There are C(45,6)=8,145,060 complete unordered selections. One particular ticket has jackpot probability 1/8,145,060 in a fair draw. In contrast, a particular number appearing somewhere among the six main numbers has probability 6/45. These are different events and should not be interchanged.
The operator describes the Saturday draw time as approximately 20:35, subject to broadcaster changes. The legacy schedule said 20:45. The correction is logged; a reviewed timetable is not a live countdown or a guarantee that every draw starts at an exact second.
The reviewed KRW 1,000 base price is a game cost, not a promise of a net payout. Tax rates and claim deadlines were not verified for this registry.
Lotto 6/45: the numbers behind the odds
- Ticket format
- 6 of 45
- Calculated vs official odds
- Calculated 1 in 8,145,060 (≈ 1.227 × 10^-7). Official 1 in 8,145,060 (Lotto 6/45 introduction, reviewed 2026-10-04). Equal.
- Official odds of any prize
- 1 in 42 (Lotto 6/45 introduction, reviewed 2026-10-04). Published approximate figure for winning a prize of any tier, not the jackpot chance.
- 1,000 distinct tickets
- cover 1,000 of 8,145,060 outcomes (about 1 in 8,145); duplicates add nothing.
- One-number neighbours
- 234 tickets (6 × 39: choose which of your 6 main numbers to replace, and which of the 39 unused numbers replaces it) differ from yours in exactly one main number, other pools unchanged. With yours they cover 235 of 8,145,060 outcomes (about 1 in 34,659). This counts ticket combinations; a different ticket is not a likelier one.
- One fixed ticket, 1,000,000 independent draws
- expected jackpot hits 0.123 (1,000,000 ÷ 8,145,060); chance of at least one hit 11.6% (1 − (1 − 1/8,145,060)^1,000,000). Exact calculation, not a played or simulated result.
Calculated values assume equally likely combinations, drawing without replacement and independent pools; prizes, taxes, ticket costs and rule changes are not modelled. None of this predicts real draws or recommends buying tickets.
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What understanding the odds can and cannot do
Balanced selections, birthdays and past draw frequencies do not improve the jackpot chance of a particular valid ticket. LottoFlick does not predict winning numbers. Use the combination calculator to explore models and the Explorer to compare field scopes.
Official evidence and limits
- Lotto 6/45 introduction — Donghaeng Lottery; verified fields: name, country, jurisdiction, mainPick, mainPool, drawOnlyBonus, ticketPrice, currency, drawSchedule, drawTime, drawTimezone, jackpotOdds, overallOdds; reviewed 2026-10-04.
Verified status applies to the stated base format and sourced fields. Claim deadlines, taxes, additional products and live jackpot amounts are not verified here. Check the responsible operator before purchasing or claiming a ticket.
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