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> 200x200 spiral number grid with odd numbers that have a 23.38% chance of being coloured in black. This doesn't seem to take into account that big prime numbe
by jwilk 9y ago
> 200x200 spiral number grid with odd numbers that have a 23.38% chance of being coloured in black.
This doesn't seem to take into account that big prime numbers are less "likely" than small ones.
- xyzzyz 9y agoYes, if you take into account all factors that might cause diagonal streaks more likely on real spiral as opposed to random grid, you might actually find out the real cause of this strange fact.
- jjaredsimpson 9y agoIIRC the pattern still arises even if you generate pseudo-primes randomly.
- posterboy 9y agoThe square root plays a role in the distribution of primes as well as in the area of a circle. The former is involved in an upper bound for the numbers to be checked performing Sieve of Eratosthenes.