0
3 is a triangular number that is also prime.
Here is a list of some of the first few triangular numbers:
0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666, 703, 741, 780, 820, 861, 903, 946, 990, 1035, 1081, 1128, 1176, 1225, 1275
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Is the number 707 a triangular number?
707 is not a triangular number. The closest triangular numbers to 707 are 703 and 741.
What are the five triangular numbers that follow 21?
The five triangular numbers that follow 21 are 28, 36, 45, 55, and 66.
Are any two prime numbers relatively prime?
Any two prime numbers will be relatively prime. Numbers are relatively prime if they do not have any prime factors in common. Prime numbers have only themselves as prime factors, so all prime numbers are relatively prime to the others.
What are products of prime numbers?
Products of prime numbers are composite numbers.
What are the opposite of prime numbers?
The opposite of prime numbers are composite numbers.
