1,2,4,7,12.19 Can Someone Help Me Find Out What Are The Next Two Terms And The Rule??

1,2,4,7,12.19 can someone help me find out what are the next two terms and the rule??

  31 and 44
the differences are 1,2,3,5 and 7 which are all prime numbers so just add 11 to get 31 and add 13 to get 44

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