getCleanerResults.js

const getCleanerResults = (a,b) =>  {
  return checkPrime(add101(multiply5or10(subtract(sum(square(a), double(b)), a))))
}

const square = x => x**2
const double = x => x * 2
const sum = (a,b) => a + b
const subtract = (a,b) => a - b * 2
const multiply5or10 = x => (x % 2 === 0) ? x * 5 : x * 10
const add101 = x => x + 101
const checkPrime = x => isPrime(x) ? 1 : x 
const isPrime = num => {
  for (var i = 2; i < parseInt(num/2); i++) {
    if (num % i === 0) return false;
  }
  return num >= 1;
}

console.log(getCleanerResults(5, 10))       // 451