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Prime Numbers Under 1000

All 168 primes below 1000 in order, with the gap to the previous prime beside each one. A gap of 2 marks a twin prime.

168 rows

#PrimeGap
12
231
352
472
5114
6132
7174
8192
9234
10296
11312
12376
13414
14432
15474
16536
17596
18612
19676
20714
21732
22796
23834
24896
25978
261014
271032
281074
291092
301134
3112714
321314
331376
341392
3514910
361512
371576
381636
391674
401736
411796
421812
4319110
441932
451974
461992
4721112
4822312
492274
502292
512334
522396
532412
5425110
552576
562636
572696
582712
592776
602814
612832
6229310
6330714
643114
653132
663174
6733114
683376
6934710
703492
713534
723596
733678
743736
753796
763834
773896
783978
794014
804098
8141910
824212
8343110
844332
854396
864434
874496
884578
894614
904632
914674
9247912
934878
944914
954998
965034
975096
9852112
995232
10054118
1015476
10255710
1035636
1045696
1055712
1065776
10758710
1085936
1095996
1106012
1116076
1126136
1136174
1146192
11563112
11664110
1176432
1186474
1196536
1206596
1216612
12267312
1236774
1246836
1256918
12670110
1277098
12871910
1297278
1307336
1317396
1327434
1337518
1347576
1357614
1367698
1377734
13878714
13979710
14080912
1418112
14282110
1438232
1448274
1458292
14683910
14785314
1488574
1498592
1508634
15187714
1528814
1538832
1548874
15590720
1569114
1579198
15892910
1599378
1609414
1619476
1629536
16396714
1649714
1659776
1669836
1679918
1689976

Sieved, not copied

The list is produced by a sieve of Eratosthenes when the page is built. A transcribed prime list is the classic place for a typo nobody ever notices.

Questions

How many primes are there below 1000?

There are 168. They thin out as numbers grow: 25 below 100, 168 below 1000, 1229 below 10 000.

Why is 1 not a prime number?

A prime has exactly two distinct divisors, 1 and itself, and 1 has only one. Excluding it is what makes every number factor into primes in exactly one way.

What is a twin prime?

A pair of primes two apart, such as 41 and 43. In this table they are the rows with a gap of 2.

Sources and last check

  1. oeis.org

Information, not professional advice.

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