@science.sam: try it!!!! (Just don’t show your work for this one…) Every credit card # follows this rule, called the Luhn algorithm. What a thrill to have THE math queen @Kyne on the latest episode of the Curiosity Weekly podcast. Even if you think you hate math, you’ll love this episode I promise! Give it a listen wherever you listen to things 🫶🏼 #Science #math #funfacts
i think we need to test this. everyone, comment your credit card info now
2025-11-06 02:34:01
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anne.💫 :
Most importantly, the algorithm makes it so if you mistype a number, you don't accidentally type someone else's number.
2025-11-06 23:12:54
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Chat full capoté :
I really don’t know what to do with this information
2025-11-05 23:31:32
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juman🍉 :
that’s insane how did they come up with this
2025-11-05 23:39:40
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odette :
I really tried to listen and understand but couldn’t
2025-11-07 03:07:29
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NCMAT :
First digit: 3=Amex, 4=VISA, 5=MasterCard, 6=Discover
2025-11-07 03:15:23
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sd :
girl I’m STILL confused
2025-11-05 23:25:21
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JJ :
Omg I hadn’t seen Kyne in years lol
2025-11-06 08:40:17
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__heyleyy :
Ohhh so thats how they do it! Lol i thought they had a database of all the cc numbers and would just check it against that! Coool
2025-11-05 23:34:59
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Lu :
I was shocked that the social security numbers don’t have this type of security. Which is why it can get stolen so easily
2025-11-06 14:49:11
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Wah Man 🕺🏻 :
I didn’t even realize it was Kyne until they talked! I’d recognize that voice anywhere!
2025-11-07 01:36:55
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Sushi 🍣 :
Whoever thought of creating this algorithm is a real genius!
2025-11-07 03:11:56
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cajunbander :
But wait, what if somone accidentally types in an even digit incorrectly but gets all the odd digits correct?
2025-11-07 01:29:47
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sam.jax :
I feel like we should teach this kind of math in schools. Applied math is much easier to grasp than math theory and its more practical
2025-11-07 01:41:08
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Evan Stern :
Love it
2025-11-05 18:29:57
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user1313987859237 :
Cs50 problems set flashbacks.... Ohh the pain.
2025-11-05 22:23:00
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Juan Cruz :
love kyne! drag queen of math
2025-11-06 02:53:25
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MNstrong :
My favourite class as an undergrad was number theory. That’s where I learned mod math and the check num.
2025-11-06 23:39:20
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Ani :
I’ve never seen this person without full make up and just recognized them by the voice! Love, love 💕
2025-11-06 02:26:34
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Reggie :
I've never seen Kyne out of drag but immediately knew who it was from voice 💙
2025-11-06 20:23:52
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Daniel 🐍🧬🔬🥼 :
This is the reason why I lock my cards all the time after two of them got compromised despite my best efforts to protect myself. Sometimes banks get lazy and just replace your card with one that has the last two digits different, but there is only a finite number of digits that would satisfy the Luhn algorithm which makes it easy for your card to get compromised again 🥲 I know this because one of my cards got compromised twice.
2025-11-06 02:52:01
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therave :
that luhn algorithm is slick
2025-11-08 05:54:57
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Joy :
WHAT?!
2025-11-05 21:59:02
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Nacho :
But why only odds positions? What if I mix up an even position?
2025-11-06 03:39:23
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stebon :
So does this mean that one in ten times that you make an input error, the algorithm will give a false positive?
2025-11-06 10:00:46
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