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List of primes numbers from 21 to 2000

Prime Numbers Between Calculator

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Ex.: 1 to 100, etc.

Answer
There are 295 prime numbers between 21 and 2000.

They are:

23293137414347535961
67717379838997101103107
109113127131137139149151157163
167173179181191193197199211223
227229233239241251257263269271
277281283293307311313317331337
347349353359367373379383389397
401409419421431433439443449457
461463467479487491499503509521
523541547557563569571577587593
599601607613617619631641643647
653659661673677683691701709719
727733739743751757761769773787
797809811821823827829839853857
859863877881883887907911919929
937941947953967971977983991997
1009101310191021103110331039104910511061
1063106910871091109310971103110911171123
1129115111531163117111811187119312011213
1217122312291231123712491259127712791283
1289129112971301130313071319132113271361
1367137313811399140914231427142914331439
1447145114531459147114811483148714891493
1499151115231531154315491553155915671571
1579158315971601160716091613161916211627
1637165716631667166916931697169917091721
1723173317411747175317591777178317871789
1801181118231831184718611867187118731877
1879188919011907191319311933194919511973
19791987199319971999

There are 57 tween primes between 21 and 2000.

The folowing are the sets of tween primes between 21 and 2000:

(29,31); (41,43); (59,61); (71,73); (101,103); (107,109); (137,139); (149,151); (179,181); (191,193); (197,199); (227,229); (239,241); (269,271); (281,283); (311,313); (347,349); (419,421); (431,433); (461,463); (521,523); (569,571); (599,601); (617,619); (641,643); (659,661); (809,811); (821,823); (827,829); (857,859); (881,883); (1019,1021); (1031,1033); (1049,1051); (1061,1063); (1091,1093); (1151,1153); (1229,1231); (1277,1279); (1289,1291); (1301,1303); (1319,1321); (1427,1429); (1451,1453); (1481,1483); (1487,1489); (1607,1609); (1619,1621); (1667,1669); (1697,1699); (1721,1723); (1787,1789); (1871,1873); (1877,1879); (1931,1933); (1949,1951); (1997,1999);

The sum of prime numbers between 21 and 2000 is 2.7697 × 105.

The average of prime numbers between 21 and 2000 is 938.89.

Note: this calculator also includes the starting and the ending number, which form the interval, if they are primes.

You can use this calculator to get the list of prime numbers from 21 to 2000 or between any two specified numbers, including them.

What is a prime number?

A prime number is a number which is only divisible by and itself.

Among mathematicians, 1 is universally regarded as non-prime.

Zero has an infinite number of factors; thus not prime or composite.

Definition of tween primes or what are tween primes?

For a pair of primes to be Twins, they must obey the following rule.

If i and j are twin primes, then both i and j must be individually primes and also should differ by 2, i.e. (i−j) = 2 or (j−i) = 2

Examples of tween primes sets (pairs):

(29,31); (41,43); (59,61); (71,73); (101,103); (107,109); (137,139); (149,151); (179,181); (191,193); (197,199); (227,229); (239,241); (269,271); (281,283); (311,313); (347,349); (419,421); (431,433); (461,463); (521,523); (569,571); (599,601); (617,619); (641,643); (659,661); (809,811); (821,823); (827,829); (857,859); (881,883); (1019,1021); (1031,1033); (1049,1051); (1061,1063); (1091,1093); (1151,1153); (1229,1231); (1277,1279); (1289,1291); (1301,1303); (1319,1321); (1427,1429); (1451,1453); (1481,1483); (1487,1489); (1607,1609); (1619,1621); (1667,1669); (1697,1699); (1721,1723); (1787,1789); (1871,1873); (1877,1879); (1931,1933); (1949,1951); (1997,1999);

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