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27 Cards in this Set
- Front
- Back
- 3rd side (hint)
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to FACTOR
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to write as a product
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2 & 3 are factors of 6.
(2)(3) is a factorization of 6. |
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Natural numbers
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1,2,3,4,5,6,7,...
also known as Counting numbers |
Every natural number except 1 is either a prime number or a composite number.
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Prime number
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a natural number greater than 1 whose only factors are 1 and itself
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The first few prime numbers are 2,3,5,7,11,13,17,19, 23, 29,31, 37,
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Prime numbers less than 100
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29,
31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 |
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Composite number
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a natural number greater than 1 that is not prime
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Prime numbers from 101 to 250
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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.
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Prime numbers from 251 to 300
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251, 257, 263, 269, 271, 277, 281, 283, 293
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Prime numbers from 401 to 500
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401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479,
487, 491, 499 |
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Prime numbers from 501 to 600
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503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599
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Prime numbers from 601 to 700
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601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 673, 677, 683, 691
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prime from 300 up
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307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397
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Prime numbers from 701 to 800
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701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797
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Prime numbers from 801 to 900
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809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887
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Prime numbers from 901 to 1000
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907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997
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Prime numbers from 1001 to 1100
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1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069, 1087, 1091, 1093, 1097
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Prime numbers from 1101 to 1200
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1103, 1109, 1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181, 1187, 1193
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Prime numbers from 1201 to 1300
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1201, 1213, 1217, 1223, 1229, 1231, 1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291, 1297
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Prime numbers from 1301 to 1400
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1301, 1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399
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Prime numbers from 1401 to 1500
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1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, 1499
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Prime numbers from 1501 to 1600
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1511, 1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583
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Prime factorization
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writing a number as a product of its primes
12 = (2) (2) (3) |
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Divisibility test for 2
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A whole number is divisible by 2 if the ones digit is 0, 2,4,6, or 8.
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Divisibility test for 3
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A whole number is divisible by 3 if the sum of the digits is divisible by 3.
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Divisibility test for 5
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A whole number is divisible by 5 is the ones digit is 0 or 5.
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A MULTIPLE of a number is
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the product of that number and any natural number.
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The LEAST COMMON MULTIPLE of two numbers is
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the smallest number that is a multiple of both numbers.
The LCM of 2 and 3 is 6. |
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To find the LCM of a list of numbers:
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1. Write the prime factorization of each number.
2. Multiply all prime factors, using each prime factor the greatest number of times it appears in any one factorization. |
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