Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

### Questions (5)

 14 Sum of the first integer powers of $n$ up to k 5 Show that for $n!/2 - p$, $p$ is the least prime factor if $n > p$ 1 Nested Geometric Series Formula 0 What is the relationship between sums of powers of $n$ and the stirling numbers? 0 Show that $n+1$ is prime if (Denominator(Bernoulli Number($n$)))/($n+1$) is an integer

### Reputation (371)

 +10 show this number is not a prime number +2 Conditional sum and product relationship +2 Beta Question Problem +2 Points on the arc and the distance between them

 1 show this number is not a prime number 1 Show that $n+1$ is prime if (Denominator(Bernoulli Number($n$)))/($n+1$) is an integer

### Tags (10)

 2 prime-numbers × 4 0 summation × 2 1 number-theory × 4 0 binomial-coefficients × 2 1 sequences-and-series × 3 0 algebra-precalculus 1 calculus × 3 0 stirling-numbers 1 bernoulli-numbers × 2 0 geometric-series

### Accounts (5)

 Mathematics 371 rep 22 silver badges1515 bronze badges Mathematica 177 rep 55 bronze badges Physics 101 rep 11 bronze badge Unix & Linux 101 rep 11 bronze badge Stack Overflow 101 rep 11 bronze badge