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Numbers

Numbers are our way to quantify, label, and organize the world around us in a logical manner. However, the systems used to obtain this goal differ geographically, historically, and by relative utility. All questions pertaining to numbers, including historic labeling systems, bases of numerical systems, constants, and the various ways they're grouped together, should be placed into this category.

46,867 Questions

Is 405 a composite number?

Yes.
Yes it is.

Anything that is divisible by more than two numbers (itself and 1) is considered a composite number. Looking at the number, you can tell that it is divisible by 5 because it ends in a 5. There will be more factors, but finding one that is not 1 or itself will cause the number to be composite.

What is the irrational number that William shanks created?

William Shanks is not known to have created any number - rational or irrational. He did calculate pi to a greater degree of accuracy then previously but the number pi had been discovered around 4 thousand years before Shanks. Therefore it can hardly be said that he discovered it.

What is 472509 in word form?

Four hundred seventy-two thousand, five hundred nine.

What is irratoinal numbers?

An irrational number can not be expressed as a fraction such as the square root of 2

What is the number of the army in Revelation?

Two hundred million - most likely a combination of Russia, China and other Far Eastern nation which many believe India will join into this future Confederation:

Revelation 9:16King James Version (KJV)16 And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them.

Is 123424634594307766457 an odd number?

it is a large number to calculate and if our sponge brains can i pronounce NOW spells no.

What are all of the odd prime numbers?

It would go on forever, but here:

3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, and 997

That's an infinite number. All prime numbers are odd except for "2."

Note that 1 is not a prime number, because it has 1 factor, 1, not 1 and 1

What is the biggest number in the wolrd in number form?

There is no such number as if you ever find one, add 1 to it and then you'll have an even larger number.