<![CDATA[My phone number is a 7-digit prime that shows up in the digits of pi.]]>My phone number is a 7-digit prime that shows up in the digits of pi. My husband's phone number is a 7-digit prime that shows up in the digits of e. We met when training students for the Maths Olympiad. The fess is how nerdy we both are.

]]>https://board.circlewithadot.net/topic/0e46f971-038f-4241-9174-b972ee900e74/my-phone-number-is-a-7-digit-prime-that-shows-up-in-the-digits-of-pi.RSS for NodeTue, 21 Apr 2026 13:21:41 GMTSun, 22 Mar 2026 10:20:06 GMT60<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:47:37 GMT]]>@fesshole whereas if you’d met at a cybersecurity convention you’d still not know each other’s numbers.

]]>https://board.circlewithadot.net/post/https://mstdn.social/users/NotTheLBCGuy/statuses/116272428329785181https://board.circlewithadot.net/post/https://mstdn.social/users/NotTheLBCGuy/statuses/116272428329785181Sun, 22 Mar 2026 10:47:37 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:45:50 GMT]]>@Gaelan you have an application for that ^^ : https://www.angio.net/pi/

(with 100 million of pi decimals, the odds seems to be 99.995%)
@fesshole

]]>https://board.circlewithadot.net/post/https://mamot.fr/users/gfadrelle/statuses/116272421280176111https://board.circlewithadot.net/post/https://mamot.fr/users/gfadrelle/statuses/116272421280176111Sun, 22 Mar 2026 10:45:50 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:44:20 GMT]]>@no_brainer @Gaelan @fesshole I'm not certain but I thought most sequences were, and 7 is a short length.
Guess you can search for your number on a page with the first million digits
https://www.piday.org/million/

]]>https://board.circlewithadot.net/post/https://mastodon.social/users/sldrant/statuses/116272415400894028https://board.circlewithadot.net/post/https://mastodon.social/users/sldrant/statuses/116272415400894028Sun, 22 Mar 2026 10:44:20 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:40:10 GMT]]>@fesshole
And when you multiply, RSA is born.

]]>https://board.circlewithadot.net/post/https://muenchen.social/users/j_j/statuses/116272399025742862https://board.circlewithadot.net/post/https://muenchen.social/users/j_j/statuses/116272399025742862Sun, 22 Mar 2026 10:40:10 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:37:19 GMT]]>@sldrant @Gaelan @fesshole Are you sure, or is there a mathematical proof, that *any* (in this case 7-digit) combination will appear somewhere in an irrational number?

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/116068111881630023/statuses/116272387820903722https://board.circlewithadot.net/post/https://mastodon.social/ap/users/116068111881630023/statuses/116272387820903722Sun, 22 Mar 2026 10:37:19 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:31:58 GMT]]>@fesshole that's AWESOME.

]]>https://board.circlewithadot.net/post/https://toot.boston/users/rednikki/statuses/116272366748504693https://board.circlewithadot.net/post/https://toot.boston/users/rednikki/statuses/116272366748504693Sun, 22 Mar 2026 10:31:58 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:31:42 GMT]]>@no_brainer @Gaelan @fesshole I guess it's more whether they're in the first hundred digits otherwise yes it's sort of meaningless as I am also fairly sure every combination occurs somewhere as that's part of being irrational

]]>https://board.circlewithadot.net/post/https://mastodon.social/users/sldrant/statuses/116272365762708458https://board.circlewithadot.net/post/https://mastodon.social/users/sldrant/statuses/116272365762708458Sun, 22 Mar 2026 10:31:42 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:27:47 GMT]]>@Gaelan @fesshole Interesting question. Not necessarily or? Would be really interested in knowing the answer.

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/116068111881630023/statuses/116272350333667087https://board.circlewithadot.net/post/https://mastodon.social/ap/users/116068111881630023/statuses/116272350333667087Sun, 22 Mar 2026 10:27:47 GMT<![CDATA[Reply to My phone number is a 7-digit prime that shows up in the digits of pi. on Sun, 22 Mar 2026 10:22:34 GMT]]>@fesshole That the numbers are both prime is a cool coincidence, but all numbers show up in irrational numbers like pi and e.

]]>https://board.circlewithadot.net/post/https://mastodon.social/users/nwalfield/statuses/116272329830192361https://board.circlewithadot.net/post/https://mastodon.social/users/nwalfield/statuses/116272329830192361Sun, 22 Mar 2026 10:22:34 GMT