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	<title type="html"><![CDATA[Alfred's Serif Users' Forums — A large prime number]]></title>
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	<updated>2024-10-26T18:11:04Z</updated>
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			<title type="html"><![CDATA[Re: A large prime number]]></title>
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			<content type="html"><![CDATA[<p>Answers to the puzzles.</p><div class="quotebox"><blockquote><p>The new number is 2^136,279,841 – 1</p></blockquote></div><p>So, in binary notation that number is a sequence of 136,279,841 of the symbol 1</p><p>There are no zeros in that sequence.</p><p>as 2^n - 1 can be expressed in binary notation as a sequence of n of the symbol 1</p><p>For example 2^3 - 1 is 8 - 1 which is 7 and 7 in binary is 111</p><p>There are no zeros in that sequence.</p><p>For example 2^4 - 1 is 16 - 1 which is 15 and 15 in binary is 1111</p><p>There are no zeros in that sequence.</p><p>William</p>]]></content>
			<author>
				<name><![CDATA[William]]></name>
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			<updated>2024-10-26T18:11:04Z</updated>
			<id>https://punster.me/serif/viewtopic.php?pid=5917#p5917</id>
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			<title type="html"><![CDATA[Re: A large prime number]]></title>
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			<content type="html"><![CDATA[<div class="quotebox"><cite>William wrote:</cite><blockquote><p>Some puzzles for those of us who enjoy such stuff.</p><p>How is that prime number expressed in binary notation?</p><p>How many zeros are there in that binary expression of that prime number?</p></blockquote></div><p>Has anyone tried these puzzles?</p><p>William</p>]]></content>
			<author>
				<name><![CDATA[William]]></name>
				<uri>https://punster.me/serif/profile.php?id=4</uri>
			</author>
			<updated>2024-10-24T13:47:12Z</updated>
			<id>https://punster.me/serif/viewtopic.php?pid=5889#p5889</id>
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			<title type="html"><![CDATA[Re: A large prime number]]></title>
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			<content type="html"><![CDATA[<div class="quotebox"><cite>William wrote:</cite><blockquote><p>&gt; Largest known prime number, spanning 41 million digits, discovered by amateur mathematician using free software</p><p><a href="https://www.msn.com/en-gb/entertainment/news/largest-known-prime-number-spanning-41-million-digits-discovered-by-amateur-mathematician-using-free-software/ar-AA1sJUcY">https://www.msn.com/en-gb/entertainment … r-AA1sJUcY</a></p></blockquote></div><p>The original Live Science article is here:</p><p><a href="https://www.livescience.com/physics-mathematics/mathematics/largest-known-prime-number-spanning-41-million-digits-discovered-by-amateur-mathematician-using-free-software">https://www.livescience.com/physics-mat … e-software</a></p><p>I wonder why MSN classifies this as ‘entertainment news’!</p>]]></content>
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				<name><![CDATA[Alfred]]></name>
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			<updated>2024-10-24T05:39:22Z</updated>
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			<title type="html"><![CDATA[Re: A large prime number]]></title>
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			<content type="html"><![CDATA[<p>Some puzzles for those of us who enjoy such stuff.</p><p>How is that prime number expressed in binary notation?</p><p>How many zeros are there in that binary expression of that prime number?</p>]]></content>
			<author>
				<name><![CDATA[William]]></name>
				<uri>https://punster.me/serif/profile.php?id=4</uri>
			</author>
			<updated>2024-10-23T21:43:19Z</updated>
			<id>https://punster.me/serif/viewtopic.php?pid=5873#p5873</id>
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			<title type="html"><![CDATA[A large prime number]]></title>
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			<content type="html"><![CDATA[<p>&gt; Largest known prime number, spanning 41 million digits, discovered by amateur mathematician using free software</p><p><a href="https://www.msn.com/en-gb/entertainment/news/largest-known-prime-number-spanning-41-million-digits-discovered-by-amateur-mathematician-using-free-software/ar-AA1sJUcY">https://www.msn.com/en-gb/entertainment … r-AA1sJUcY</a></p>]]></content>
			<author>
				<name><![CDATA[William]]></name>
				<uri>https://punster.me/serif/profile.php?id=4</uri>
			</author>
			<updated>2024-10-23T21:34:38Z</updated>
			<id>https://punster.me/serif/viewtopic.php?pid=5872#p5872</id>
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