No 16

Some formulae produce lots of primes one after the other...

n²-n+2=2 for n=1

n²-n+3=3,5 for n=1,2

n²-n+5=5,7,11,17 for n=1,2,3,4

n²-n+11=11,13,17,23,31,41,53,67,81,101 for n=1,2,...10

Try n²-n+17 for yourself (see a list of prime numbers if needed)

Now look at Amazing Number Fact No 11

Can you find other Prime-Rich Formulae?

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