Library›Primes & Factors›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaNumber theory

Prime factorization of 72

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new aha2³ × 3²

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. 19Is 91 prime?RECALL
    No

    91 = 7 × 13

    Open this card ↗
  2. 20Largest prime below 50RECALL
    47

    Its only positive factors are 1 and 47

    Open this card ↗
  3. 21Greatest common factor of 12 and 18RECALL
    6

    The largest shared factor

    Open this card ↗