"Septy Primes" would require two primes numbers with a difference of seven.
But for two numbers to have a difference of seven, one of them has to be even. The only even prime is 2, and 2+7=9, but 9 is not prime.
Therefore, there are no "septy primes".
For those stumbling onto this page, Bill in Boston is referring to a statement on this page about Septagons: http://mrburkemath.blogspot.com/2015/03/x-why-mini-septagon.html
No Septy primes? 7 is prime.
ReplyDelete"Septy Primes" would require two primes numbers with a difference of seven.
ReplyDeleteBut for two numbers to have a difference of seven, one of them has to be even. The only even prime is 2, and 2+7=9, but 9 is not prime.
Therefore, there are no "septy primes".
For those stumbling onto this page, Bill in Boston is referring to a statement on this page about Septagons: http://mrburkemath.blogspot.com/2015/03/x-why-mini-septagon.html