Good Primes
A good prime is a prime number whose square is greater than the product of any two primes at the same number of positions before and after it in the sequence of primes.
A good prime satisfies the inequality:
pn2 > p(n-i) * p(n+i)
for all 1 ≤ i ≤ n−1. pn is the nth prime.
First 20: 5, 11, 17, 29, 37, 41, 53, 59, 67, 71, 97, 101, 127, 149, 179, 191, 223, 227, 251, 257
Checkout list of first: 10, 50, 100, 500, 1000 good primes. You can also check all good primes.
Visualization#
Every frame counter is increased by one. If it is good prime then dot appears. Color has no meaning. Video has 25fps.
You can also compare it with other types.
External#
- OEIS: A028388
- Wikipedia: Good primes
- Youtube: Visualization up to 1 million
Tags#
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