How to grep the number set

How to grep the number set

pSource file like:br 15105021br 15105043br 15106013br 15106024br
15106035br 15105024br 15105042br 15106015br 15106021br 15106034 /p phow to
grep line have num seq like : 1510603,1510504/p pI use this grep: /p
precodeawk /[1510603,1510504]/ soursefile.txt /code/pre pbut it does not
work.br please help me ,3q!/p