What's a Mersenne prime? How hard could it be to find the next one?
Why are there only 50 known Mersenne primes? What's with $150,000?
The activity: NewMersennePrime.pdf
CCSS: 4.OA, 5.OA, 6.EE, 8.EE, MP1, MP5, MP7, MP8
For members we have an editable Word docx and solutions/discussion notes.