"safe prime" meaning in English

{
  "etymology_text": "These primes are called safe because they are safe to use in cyptography due to the fact that one less than the prime has the largest possible prime factor.",
  "forms": [
    {
      "form": "safe primes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "safe prime (plural safe primes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Any prime number of the form 2p + 1, where p is also a prime."
      ],
      "id": "en-safe_prime-en-noun-4fbK9Ziq",
      "links": [
        [
          "prime number",
          "prime number"
        ]
      ]
    }
  ],
  "word": "safe prime"
}

{
  "etymology_text": "These primes are called safe because they are safe to use in cyptography due to the fact that one less than the prime has the largest possible prime factor.",
  "forms": [
    {
      "form": "safe primes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "safe prime (plural safe primes)",
      "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",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Any prime number of the form 2p + 1, where p is also a prime."
      ],
      "links": [
        [
          "prime number",
          "prime number"
        ]
      ]
    }
  ],
  "word": "safe prime"
}