WikiCards · Card list · Science cards · Jacobi symbol
Uncommon card · Science
Jacobi symbol, an Uncommon card
The Jacobi symbol is a generalization of the Legendre symbol.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 75
- DEF
- 39
- Power
- 114
- Wikipedia reads a year
- 17,000
Power 114 (ATK + DEF): stronger than 55 % of WikiCards cards.
Jacobi symbol quiz: 3 questions
Three questions on the Jacobi symbol card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Which of these cards hits hardest (highest ATK)?
Answer
Jacobi symbol. Jacobi symbol 75 · Component 70 · Bowden cable 67 · Krake 58 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Bowden cable. Bowden cable 25,000 · Jacobi symbol 17,000 · Leyland Tiger 8,800 · Krake 2,800 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Introduced by Jacobi in 1837, it is of theoretical interest in modular arithmetic and other branches of number theory, but its main use is in computational number theory, especially primality testing and integer factorization, these in turn are important in cryptography.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Jacobi symbol article was read about 17,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 75 and blocks with 39: each hit it takes is cut by 16 %.
How to get Jacobi symbol
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Jacobi symbol in the power ranking, all domains together.
- Astronomical interferometerUncommon · Science · ATK 68 DEF 46
- Najat Vallaud-BelkacemUncommon · History · ATK 66 DEF 48
- New Fourth ArmyUncommon · History · ATK 66 DEF 48
- Asyut GovernorateUncommon · Society · ATK 62 DEF 52
- Aaron CrudenCommon · Society · ATK 68 DEF 46
- Functional flow block diagramCommon · Society · ATK 58 DEF 56
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Jacobi symbol (revision), CC BY-SA 4.0. Photo : Unknown author Unknown author, Public domain, Wikimedia Commons.

