@Test
    public void doTest() {
        setPrimes(TEMP);

        HashSet<BigInteger> f = new HashSet<BigInteger>();
        BigInteger temp = new BigInteger("70000");
        while (true) {
            f = getFactors(temp);
            if (f.size() == 4) {
                f = getFactors(temp.add(ONE));
                if (f.size() == 4) {
                    f = getFactors(temp.add(TWO));
                    if (f.size() == 4) {
                        f = getFactors(temp.add(THREE));
                        if (f.size() == 4) {
                            System.out.println(temp);
                            break;
                        }
                    }
                }
            }
            temp = temp.add(ONE);
            if (temp.compareTo(new BigInteger("143050")) == 1) break;
            if (temp.compareTo(new BigInteger("80000")) == 1) break;
        }

    }