LibraryPrimes & FactorsOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaNumber theory

Is 51 prime?

Think it. Then flip it.
ahamoraTap to reveal
Back to the cue
Math & LogicOne small aha
Your new ahaNo

A prime number is a positive integer greater than one with exactly two positive divisors. Source: Prime number

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Primes & Factors

A few more worth knowing.

  1. 10Is 97 prime?RECALL
    Yes

    Only divisible by 1 and 97

    Open this card ↗
  2. 11Prime factorization of 12RECALL
    2² × 3

    2 × 2 × 3

    Open this card ↗
  3. 12Prime factorization of 18RECALL
    2 × 3²

    2 × 3 × 3

    Open this card ↗