2020 gone for good. Welcome 2021!
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01-01-2021, 03:17 AM
Post: #1
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2020 gone for good. Welcome 2021!
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01-01-2021, 04:39 AM
Post: #2
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RE: 2020 gone for good. Welcome 2021!
20201231 and 20210101 are both prime numbers. Maybe it's a good sign...
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01-01-2021, 04:57 AM
Post: #3
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RE: 2020 gone for good. Welcome 2021!
Awesome job Gerson, I LOVE seeing the New Year greeted by an HP-75C!!
And something about the fact that both of those number are Prime, and even more so that Dave thought to check their primeness, bodes well for a better year. Happy New Year everybody! --Bob Prosperi |
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01-01-2021, 05:40 AM
Post: #4
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RE: 2020 gone for good. Welcome 2021!
Happy New Year 2021
[attachment=8975] Gamo |
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01-01-2021, 08:49 AM
Post: #5
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RE: 2020 gone for good. Welcome 2021!
Greetings, Massimo -+×÷ ↔ left is right and right is wrong |
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01-01-2021, 09:49 AM
Post: #6
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RE: 2020 gone for good. Welcome 2021!
Happy New Year. Welcome 2021.
Esben 15C CE, 28s, 35s, 49G+, 50G, Prime G2 HW D, SwissMicros DM32, DM42, DM42n, WP43 Pilot Elektronika MK-52 & MK-61 |
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01-01-2021, 12:08 PM
Post: #7
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RE: 2020 gone for good. Welcome 2021!
Happy New Year!
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01-01-2021, 05:12 PM
Post: #8
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RE: 2020 gone for good. Welcome 2021!
Happy New Year 2021!
[attachment=8977] |
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01-01-2021, 06:38 PM
Post: #9
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RE: 2020 gone for good. Welcome 2021!
(01-01-2021 04:39 AM)Dave Britten Wrote: 20201231 and 20210101 are both prime numbers. Maybe it's a good sign... Indeed they are. As for 2021, it's composite and readily factorized a la Fermat, like this: 2021 = 2025 - 4 = 452 - 22 = (45 - 2) * (45 + 2) = 43 * 47. Happy New Year 2021 ! V. All My Articles & other Materials here: Valentin Albillo's HP Collection |
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01-01-2021, 07:04 PM
Post: #10
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RE: 2020 gone for good. Welcome 2021!
Happy New Year 2021 !
Laurent |
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01-02-2021, 01:28 AM
Post: #11
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RE: 2020 gone for good. Welcome 2021!
(01-01-2021 04:39 AM)Dave Britten Wrote: 20201231 and 20210101 are both prime numbers. Maybe it's a good sign... This will not be true next year... I wonder how often this happens and when will be the next time? My Collection: 55, 67T, 25PLP, 34C, 15C, 16C, 41CV, 41CX, 41-CL, DM41X, DM42, 42S, 48G, 71B, 75C, 95LX, HP-150, Portable+, HP-86, Integral PC. |
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01-02-2021, 01:31 AM
Post: #12
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RE: 2020 gone for good. Welcome 2021!
Happy NEW YEAR !!! Stay safe, protect the ones you love and the ones you don't love too! Love all! P.S.: I have a feeling that I made a mistake in the picture above, but I cannot find which.....never mind.... |
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01-02-2021, 02:46 AM
Post: #13
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RE: 2020 gone for good. Welcome 2021!
(01-02-2021 01:28 AM)twoweims Wrote:(01-01-2021 04:39 AM)Dave Britten Wrote: 20201231 and 20210101 are both prime numbers. Maybe it's a good sign... My HP-71 says it happens at the end of these years: Code:
My Collection: 55, 67T, 25PLP, 34C, 15C, 16C, 41CV, 41CX, 41-CL, DM41X, DM42, 42S, 48G, 71B, 75C, 95LX, HP-150, Portable+, HP-86, Integral PC. |
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