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45 is an odd number and a Størmer number, as well as the 9th triangular number [1] and 5th hexagonal number. [ 2 ] 45 degrees is half of a right angle. It is also the smallest positive number that can be expressed as the difference of two nonzero squares in more than two ways: 7 2 − 2 2 {\displaystyle 7^{2}-2^{2}} , 9 2 − 6 2 ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
BSc meteorologist Janice Davila tells Bored Panda that one of the most unknown facts from her field of expertise is that weather radars are slightly tilted upward in a half-degree (1/2°) angle.
Image credits: all_thats_interesting #6. On May 18, 1980, Washington's Mount St. Helens erupted in a cataclysmic blast that left 57 people dead and an area the size of Chicago completely devastated.
The post 45 ‘Today I Learned’ Facts That Could Change The Way You Think About Things (New Pics) first appeared on Bored Panda. 45 ‘Today I Learned’ Facts That Could Change The Way You ...
It is the tenth 10-happy number, [1] and the fourth octahedral number. [2] It is a square-prime of the form p 2 × q, and fourth of this form and of the form 2 2 × q, where q is a higher prime. It is the first member of the first cluster of two square-primes; of the form p 2 × q, specifically 2 2 × 11 = 44 and 3 2 × 5 = 45.
The members of the TIL community dish out cool and interesting facts daily, ... a lifetime supply of phone cases and free endoscopic procedures for when he turned 45. ...
the largest lucky number of Euler: the polynomial f(k) = k 2 − k + 41 yields primes for all the integers k with 1 ≤ k < 41. the sum of two squares (4 2 + 5 2), which makes it a centered square number. [4] the sum of the first three Mersenne primes, 3, 7, 31. [5] the sum of the sum of the divisors of the first 7 positive integers.