Leonard Euler discovered many years ago that

$\frac π 4 = \frac 3 4 \cdot \frac 5 4 \cdot \frac 7 8 \cdot \frac {11} {12} \cdot \frac {13} {12} \cdots$ etc

where the numerators are every prime number and the denominators are the multiple of 4 nearest that prime number. Pretty fascinating if you ask me.

Leonard Euler discovered many years ago that

$\frac π 4 = \frac 3 4 \cdot \frac 5 4 \cdot \frac 7 8 \cdot \frac {11} {12} \cdot \frac {13} {12} \cdots$

where the numerators on the right-hand side are the odd prime numbers and each denominator (on both sides) is the multiple of 4 nearest to the corresponding numerator. Pretty fascinating if you ask me.

Leonard Euler discovered many years ago that

π/4 = 3/4 + 5/4 + 7/8 + 11/12 + 13/12 .... etc

where the numerators are every prime number and the denominators are the multiple of 4 nearest that prime number. Pretty fascinating if you ask me

Leonard Euler discovered many years ago that

$\frac π 4 = \frac 3 4 \cdot \frac 5 4 \cdot \frac 7 8 \cdot \frac {11} {12} \cdot \frac {13} {12} \cdots$ etc

where the numerators are every prime number and the denominators are the multiple of 4 nearest that prime number. Pretty fascinating if you ask me.