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A number where some but not all prime factors have multiplicity above 1 is neither square-free nor squareful. The Liouville function λ(n) is 1 if Ω(n) is even, and is -1 if Ω(n) is odd. The Möbius function μ(n) is 0 if n is not square-free. Otherwise μ(n) is 1 if Ω(n) is even, and is −1 if Ω(n) is odd. A sphenic number has Ω(n) = 3 ...
A cluster prime is a prime p such that every even natural number k ≤ p − 3 is the difference of two ... d = 1, 3, 7, 9) are ... bases up to 1052) Padilla, Tony (7 ...
The sum of its factors (including one and itself) sum to 360, exactly three times 120. Perfect numbers are order two ( 2-perfect ) by the same definition. 120 is the sum of a twin prime pair (59 + 61) and the sum of four consecutive prime numbers (23 + 29 + 31 + 37), four consecutive powers of two (8 + 16 + 32 + 64), and four consecutive powers ...
However, with an average savings of just $88,400 according to Northwestern, working Americans are left with a $1.37 million gap between what they think they need and what they actually have.
Once you factor in a 2% annual inflation rate and a modest average annual growth rate of 5% growth, ... While many retirees dream of travel, those with $7 million can take it up a notch. With a ...
Two million dollars may seem like more than enough money for retirement, but even that amount can vanish quickly in the face of medical expenses, inflation and taxes. If you expect to retire at 50 ...
If the extra money accessed by the individual gives more economic confidence, then the MPC of the individual may well exceed 1, as they may borrow or utilise savings. According to John Maynard Keynes, marginal propensity to consume is less than one. [1] As such, the MPC is higher in the case of poorer people than in rich. [2]
A typical car tire might rotate a million times in a 1,900-kilometre (1,200 mi) trip, while the engine would do several times that number of revolutions. Fingers: If the width of a human finger is 22 mm (7 ⁄ 8 in), then a million fingers lined up would cover a distance of 22 km (14 mi). If a person walks at a speed of 4 km/h (2.5 mph), it ...