freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-134-prime-pair-conn...

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---
id: 5900f3f21000cf542c50ff05
title: 'Problem 134: Prime pair connection'
challengeType: 5
forumTopicId: 301762
dashedName: problem-134-prime-pair-connection
---
# --description--
Consider the consecutive primes $p_1 = 19$ and $p_2 = 23$. It can be verified that 1219 is the smallest number such that the last digits are formed by $p_1$ whilst also being divisible by $p_2$.
In fact, with the exception of $p_1 = 3$ and $p_2 = 5$, for every pair of consecutive primes, $p_2 > p_1$, there exist values of $n$ for which the last digits are formed by $p_1$ and $n$ is divisible by $p_2$. Let $S$ be the smallest of these values of $n$.
Find $\sum{S}$ for every pair of consecutive primes with $5 ≤ p_1 ≤ 1000000$.
# --hints--
`primePairConnection()` should return `18613426663617120`.
```js
assert.strictEqual(primePairConnection(), 18613426663617120);
```
# --seed--
## --seed-contents--
```js
function primePairConnection() {
return true;
}
primePairConnection();
```
# --solutions--
```js
// solution required
```