{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":44229,"title":"How brilliant are you?","description":"A Brilliant number is defined as a number with two prime factors, both of which have the same number of digits.  Some examples:\r\n\r\n10=2*5.  Since 2 and 5 have the same number of digits, 10 is a brilliant number.\r\n\r\n22=2*11.  Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\r\n\r\n30=2*3*5.  Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\r\n\r\nGiven a number, write a MATLAB script to determine if the number is brilliant or not.","description_html":"\u003cp\u003eA Brilliant number is defined as a number with two prime factors, both of which have the same number of digits.  Some examples:\u003c/p\u003e\u003cp\u003e10=2*5.  Since 2 and 5 have the same number of digits, 10 is a brilliant number.\u003c/p\u003e\u003cp\u003e22=2*11.  Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\u003c/p\u003e\u003cp\u003e30=2*3*5.  Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\u003c/p\u003e\u003cp\u003eGiven a number, write a MATLAB script to determine if the number is brilliant or not.\u003c/p\u003e","function_template":"function y = brilliant(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nassert(isequal(brilliant(4),1))\r\n%%\r\nassert(isequal(brilliant(8),0))\r\n%%\r\nassert(isequal(brilliant(40),0))\r\n%%\r\nassert(isequal(brilliant(343),0))\r\n%%\r\nassert(isequal(brilliant(1536),0))\r\n%%\r\nassert(isequal(brilliant(1537),1))\r\n%%\r\nassert(isequal(brilliant(49165),0))\r\n%%\r\nassert(isequal(brilliant(657721),1))\r\n%%\r\nassert(isequal(brilliant(768819),0))\r\n%%\r\nassert(isequal(brilliant(13717421),1))\r\n%%\r\nassert(isequal(brilliant(123456789),0))\r\n%%\r\nassert(isequal(brilliant(669562601),1))\r\n%%\r\nassert(isequal(brilliant(1234567890),0))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":1615,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":66,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2017-06-01T18:34:04.000Z","updated_at":"2026-02-24T14:03:59.000Z","published_at":"2017-06-01T18:34:04.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA Brilliant number is defined as a number with two prime factors, both of which have the same number of digits. Some examples:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e10=2*5. Since 2 and 5 have the same number of digits, 10 is a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e22=2*11. Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e30=2*3*5. Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a number, write a MATLAB script to determine if the number is brilliant or not.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"problems":[{"id":44229,"title":"How brilliant are you?","description":"A Brilliant number is defined as a number with two prime factors, both of which have the same number of digits.  Some examples:\r\n\r\n10=2*5.  Since 2 and 5 have the same number of digits, 10 is a brilliant number.\r\n\r\n22=2*11.  Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\r\n\r\n30=2*3*5.  Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\r\n\r\nGiven a number, write a MATLAB script to determine if the number is brilliant or not.","description_html":"\u003cp\u003eA Brilliant number is defined as a number with two prime factors, both of which have the same number of digits.  Some examples:\u003c/p\u003e\u003cp\u003e10=2*5.  Since 2 and 5 have the same number of digits, 10 is a brilliant number.\u003c/p\u003e\u003cp\u003e22=2*11.  Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\u003c/p\u003e\u003cp\u003e30=2*3*5.  Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\u003c/p\u003e\u003cp\u003eGiven a number, write a MATLAB script to determine if the number is brilliant or not.\u003c/p\u003e","function_template":"function y = brilliant(x)\r\n  y = x;\r\nend","test_suite":"%%\r\nassert(isequal(brilliant(4),1))\r\n%%\r\nassert(isequal(brilliant(8),0))\r\n%%\r\nassert(isequal(brilliant(40),0))\r\n%%\r\nassert(isequal(brilliant(343),0))\r\n%%\r\nassert(isequal(brilliant(1536),0))\r\n%%\r\nassert(isequal(brilliant(1537),1))\r\n%%\r\nassert(isequal(brilliant(49165),0))\r\n%%\r\nassert(isequal(brilliant(657721),1))\r\n%%\r\nassert(isequal(brilliant(768819),0))\r\n%%\r\nassert(isequal(brilliant(13717421),1))\r\n%%\r\nassert(isequal(brilliant(123456789),0))\r\n%%\r\nassert(isequal(brilliant(669562601),1))\r\n%%\r\nassert(isequal(brilliant(1234567890),0))\r\n","published":true,"deleted":false,"likes_count":3,"comments_count":0,"created_by":1615,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":66,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2017-06-01T18:34:04.000Z","updated_at":"2026-02-24T14:03:59.000Z","published_at":"2017-06-01T18:34:04.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA Brilliant number is defined as a number with two prime factors, both of which have the same number of digits. Some examples:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e10=2*5. Since 2 and 5 have the same number of digits, 10 is a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e22=2*11. Although there are two prime factors, they have a different number of digits, so 22 is not a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e30=2*3*5. Although each prime factor has the same number of digits, there are more than two of them, so 30 is not a brilliant number.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a number, write a MATLAB script to determine if the number is brilliant or not.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[{"value":"Magic Numbers IV","count":1,"selected":false}],[{"value":"medium","count":1,"selected":false}]],"term":"tag:\"brilliant\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}