{"problem":{"name":"素数回文数的个数","description":{"content":"求 $11$ 到 $n$ 之间（包括 $n$），既是素数又是回文数的整数有多少个。","description_type":"Markdown"},"platform":"Luogu","limit":{"time_limit":1000,"memory_limit":131072},"difficulty":{"LuoguStyle":"P1"},"is_remote":true,"is_sync":true,"sync_url":null,"sign":"LGB2136"},"statements":[{"statement_type":"Markdown","content":"求 $11$ 到 $n$ 之间（包括 $n$），既是素数又是回文数的整数有多少个。\n\n## Input\n\n一个大于 $11$ 小于 $10000$ 的整数 $n$。\n\n## Output\n\n$11$ 到 $n$ 之间的素数回文数个数。\n\n[samples]\n\n## Note\n\n回文数指左右对称的数，如：$11$，$12121$。","is_translate":false,"language":"English"}],"meta":{"iden":"LGB2136","tags":["函数与递归"],"sample_group":[["23","1"]],"created_at":"2026-03-03 11:09:25"}}