Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Class | Number range | Quantity | Year(s) Built | Type |
| --- | --- | --- | --- | --- |
| P 1 ( de ) | 1501 –1550 | 56 | 1885–1891 | 1′B n2 |
| P 2 | 1551–1600 | 166 | 1877–1884 | 1B n2 |
| P 2 | 1551–1600 | 76 | 1878–1883 | 1B n2 |
| P 2 | 1551–1600 | 5 | 1886 | 2′B n2 |
| P 3 ( de ) | 1601–1700 | 3 | 1891 | 2′B n2v |
| P 3 1 ( de ) | 1601–1700 | 685 | 1885–1899 | 1B n2 |
| P 3 2 ( de ) | 1701–1800 | 131 | 1887–1903 | 1B n2v |
| P 4 1 ( de ) | 1801–1900 | 2 | 1891 | 2′B n2 |
| P 4 1 ( de ) | 1801–1900 | 55 | 1891–1892 | 2′B n2 |
| P 4 1 ( de ) | 1801–1900 | 424 | 1893–1901 | 2′B n2 |
| P 4 1 ( de ) | 1801–1900 | 1 | 1898 | 2′B h2 |
| P 4 2 ( de ) | 1901–2000 | 2 | 1891 | 2′B n2v |
| P 4 2 ( de ) | 1901–2000 | 707 | 1898–1910 | 2′B n2v |
| P 4 2 ( de ) | 1901–2000 | (5) | (1907) | 2′B n2v |
| P 6 | 2101–2300 | 272 | 1901–1910 | 1′C h2 |
| P 7 ( de ) | 2301–2400 | 18 | 1899–1902 | 2′C n4v |
| P 8 | 2401–2800 | 3498 | 1906–1923 | 2′C h2 |
| ( P 10 ) | (from 2801) | 260 | 1922–1925 | 1′D1′ h3 |
Question:
What is the number range for the 56 quantity?
Answer:
1501 –1550