Regular Expressions 101

1st Alternative1[5-9]\d{2,}

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[5-9]

5-9one character from 5 (53₁₀) to 9 (57₁₀)

\d{2,}a digit, repeated at least 2 times

2nd Alternative[2-9]\d{3,}

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

\d{3,}a digit, repeated at least 3 times

3rd Alternative1\d{4,}

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\d{4,}a digit, repeated at least 4 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

1[5-9]\d{2,}|[2-9]\d{3,}|1\d{4,}

800
0800
1234
1511
1555
1789
2111
2345
3456
56756
123123
123123123
159999999999