"prime triplet" meaning in English

{
  "forms": [
    {
      "form": "prime triplets",
      "head_nr": 1,
      "tags": [
        "plural"
      ]
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      "expansion": "prime triplet (plural prime triplets)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
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      ],
      "glosses": [
        "An ordered set of three prime numbers in which the smallest and largest of the three differ by six."
      ],
      "head_nr": 2,
      "id": "en-prime_triplet-en-noun-fWrsS0W~",
      "links": [
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          "mathematics",
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      "raw_glosses": [
        "(mathematics) An ordered set of three prime numbers in which the smallest and largest of the three differ by six."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "prime triplet"
      ]
    }
  ],
  "word": "prime triplet"
}

{
  "forms": [
    {
      "form": "prime triplets",
      "head_nr": 1,
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prime triplet (plural prime triplets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
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      ],
      "glosses": [
        "An ordered set of three prime numbers in which the smallest and largest of the three differ by six."
      ],
      "head_nr": 2,
      "links": [
        [
          "mathematics",
          "mathematics"
        ]
      ],
      "raw_glosses": [
        "(mathematics) An ordered set of three prime numbers in which the smallest and largest of the three differ by six."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "prime triplet"
      ]
    }
  ],
  "word": "prime triplet"
}