Numbers

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The prime numbers less than 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97. A prime number is any number that is only divisible by itself and 1. The number 1 is not considered a prime number.

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  • How many zeros are in one million?

    Q: How many zeros are in one million?

    A: There are six zeros in one million. This figure does not include decimal points.
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  • Is pi a real number?

    Q: Is pi a real number?

    A: Pi is a real number, as all numbers that exist on a number line are real. Real numbers include all rational and irrational numbers; pi is defined as an irrational number.
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  • What are all prime numbers that are less than 100?

    Q: What are all prime numbers that are less than 100?

    A: The prime numbers less than 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97. A prime number is any number that is only divisible by itself and 1. The number 1 is not considered a prime number.
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  • What is a whole number?

    Q: What is a whole number?

    A: A whole number belongs to the set of integers that are equal to or greater than zero. For example, the set of numbers {0, 1, 2, 3, 4, 5, ...} contains all of the whole numbers.
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  • What is a linear pattern?

    Q: What is a linear pattern?

    A: A linear pattern exists if the points that make it up form a straight line. In mathematics, a linear pattern has the same difference between terms. The patterns replicate on either side of a straight line.
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  • What is the Mayan number system?

    Q: What is the Mayan number system?

    A: The Mayan number system is a base-twenty system that was developed by the Mayan civilization around the fourth century A.D. Only three symbols are used to represent all numeric values: a shell for zero, a bar for five and a dot for one. These symbols are arranged in columns that are read from top to bottom, and the columns are arranged in powers of 20.
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  • What Is 500 meters equal to in miles?

    Q: What Is 500 meters equal to in miles?

    A: A distance of 500 meters is the same as a distance of 0.31 miles. The one-step conversion of meters to miles is found by multiplying the number of meters by 0.00062137.
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  • What is a Roman numerals list?

    Q: What is a Roman numerals list?

    A: A Roman numerals list includes Hindu-Arabic numerals with a corresponding set of symbols. The letters I, V, X, L, C, D and M are used as symbols by Romans in a unique system of representing numbers.
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  • What is a landmark in math?

    Q: What is a landmark in math?

    A: A landmark number is a number that makes math simpler by virtue of it being easy to relate to and calculate with, such as the number "10." Most landmark numbers are multiples of 10.
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  • What is the difference between a number and a numeral?

    Q: What is the difference between a number and a numeral?

    A: A number is a theoretical concept, and a numeral is the way that people denote that concept. A numeral contains one or more written symbols, but a number can be expressed in a range of ways. Number and numeral are often used interchangeably, but there is a slight difference between them.
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  • Is every integer a whole number?

    Q: Is every integer a whole number?

    A: Every integer is not a whole number, but every whole number is an integer. An integer is any number, positive, negative or zero, that is able to be represented without a fraction or decimal, according to Reference.com. The number of possible integers is infinite.
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  • What is standard notation?

    Q: What is standard notation?

    A: Standard notation is when a number is completely written out using numerical digits. Some examples of numbers written in standard notation are 64,100 and 2,000,000.
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  • How many zeroes are in a zillion?

    Q: How many zeroes are in a zillion?

    A: Zillion has an indeterminate number of zeroes. Despite the popular misconception, zillion actually is not a true number. Rather, zillion is defined as an indeterminately large number.
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  • What is the value of pi to 100 or more decimal places?

    Q: What is the value of pi to 100 or more decimal places?

    A: According to Joy of Pi, the value of pi to 100 decimal places is expressed as 3.1415926535897932384626433832795028841971693993751058209749445923078 164062862089986280348253421170679. Pi is an irrational number with a limitless, non-repeating decimal expansion.
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  • What is the last number on Earth?

    Q: What is the last number on Earth?

    A: There is no such thing as a last number when it comes to the natural number system. By definition, every number has a number larger than it.
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  • What is a non-real number?

    Q: What is a non-real number?

    A: A non-real, or imaginary, number is any number that, when multiplied by itself, produces a negative number. Mathematicians use the letter "i" to symbolize the square root of -1. An imaginary number is any real number multiplied by i. For example, 5i is imaginary; the square of 5i is -25.
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  • Q: Where did Roman numerals come from?

    A: As the name suggests, Roman numerals originated in Ancient Rome. The symbols used to make up Roman numerals began showing up in artifacts from 900 to 800 B.C.
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  • Q: What are the Roman numerals for "1995"?

    A: The Roman number for 1995 is MCMXCV. The Roman numeral system uses letters instead of numerals to indicate numbers. The basic letters in the Roman numeral system are I for one, V for five, X for 10, L for 50, C for 100, D for 500 and M for 1,000.
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  • Q: What number has a tens digit that is eight more than the ones digit?

    A: The two numbers that have a tens digit that is eight more than the ones digit are 80 and 91. Note that there are some larger numbers that also exhibit this pattern, such as 180, 280, 191 or 291.
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  • What is the highest number in the world?

    Q: What is the highest number in the world?

    A: Integers proceed upward in an infinite sequence, so no number can be said to be the "highest," as it is always possible to add one and get a higher number. Infinity is generally not regarded as a number but as a concept. The highest named number is the googolplex.
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  • Q: Why is Avogadro's number important?

    A: Avogadro's number, also called Avogadro's law, creates a constant value for different gases, regardless of weight and structure, which makes it a foundational law in chemistry. Italian scientist Amedeo Avogadro created his theory after observing that gases have equal volumes at given temperatures and pressures, and therefore contain the same number of molecules. Avogadro's number, written mathematically as 6.022 x 1023, demonstrates the number of molecules present in any gas within the fixed volume of 22.41L.
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