Numbers 480,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

All Numbers  &   400K  -  410K  -  420K  -  430K  -  440K  -  450K  -  460K  -  470K  -  480K  -  490K

[10K][100K…) * [200K…) * [300K…) * [400K…) * [500K…) * [600K…) * [700K…) * [800K…) * [900K…) &  1M

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q ...

481,899

[Math.]  A Cullen prime number: 481899´2481899+1. The only known Cullen prime numbers (prime numbers of the form n´2n+1) are with n = 1, 141, 4713, 5795, 6611, 18496, 32292, 32469, 59656, 90825, 262419, 361275 and 481899. 

(Masakatu Morii found the last number on 30 September 1998.)

 

483,717

[Math.]  Two consecutive sums of consecutive numbers:

6084+…+6162 = 6163+…+6240 = 483,717.   

 

486,178

[Math.]  A pair of amicable numbers (469028, 486178).

 

488,881

[Math.]  A Carmichael number: 488,881 = 37×73×181.

 

489,951

[Math.] 

7,683,984 = 1584×4851 = 27722

782432784 = 15984×48951 = 279722

78384320784 = 159984×489951 = 2799722

7839843200784 = 1599984×4899951 = 27999722

783998432000784 = 15999984×48999951 = 279999722

7839…9984320000784 = 159…999984×489…999951 = 279…9999722

...