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→900,000,000,000,000 to 999,999,999,999,999: replaced some sources with non-OEIS sources
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*'''195,643,523,275,200''' : 84th superabundant number, 20th [[superior highly composite number]]<ref name=A002201>{{Cite OEIS|A002201|Superior highly composite numbers}}</ref>
*'''195,643,523,275,200''' : 84th superabundant number, 20th [[superior highly composite number]]<ref name=A002201>{{Cite OEIS|A002201|Superior highly composite numbers}}</ref>
=== 200,000,000,000,000 to 299,999,999,999,999 ===
=== 200,000,000,000,000 to 299,999,999,999,999 ===
*'''213,458,046,676,875''' = 27[[double factorial|!!]]
*'''213,458,046,676,875''' = 27[[double factorial|!!]]. There are 213,458,046,676,875 total [[unrooted tree]]s for 16 taxa<ref>{{Cite web |last=Kong |first=Yibo |last2=Tiley |first2=George P. |last3=Solis-Lemus |first3=Claudia |date=2023-12-26 |title=Unsupervised Learning of Phylogenetic Trees via Split-Weight Embedding |url=https://arxiv.org/abs/2312.16074v2 |access-date=2026-09-27 |website=arXiv.org |language=en}}</ref><ref>{{cite journal |last1=Perretto |first1=Mauricio |last2=Lopes |first2=Heitor Silvério |date=2005-09-30 |title=Reconstruction of phylogenetic trees using the ant colony optimization paradigm |url=http://silverio.net.br/heitor/publicacoes/2005/gmr43.pdf |journal=Genetics and Molecular Research |volume=4 |issue=3 |pages=581–589 |issn=1676-5680}}</ref>
*'''215,440,028,338,359''' : number of secondary structures of RNA molecules with 40 nucleotides<ref name=A004148>{{Cite OEIS|A004148|Generalized Catalan numbers}}</ref>
*'''215,440,028,338,359''' : number of secondary structures of RNA molecules with 40 nucleotides<ref name=A004148>{{Cite OEIS|A004148|Generalized Catalan numbers}}</ref>
*'''217,774,440,785,026''' : 211th Markov number
*'''217,774,440,785,026''' : 211th Markov number

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Template:Infobox number

Portal Mathematics portal


100,000,000,000,000 (hundred trillion on the short scale; hundred billion on the long scale; hundred thousand billion; hundred million million) is the natural number following 99,999,999,999,999 and preceding 100,000,000,000,001. It is known as 1 lakh arab, 1000 kharab, 1 crore crore, or 10 nil in the Indian numbering system.

Selected 15-digit numbers (100,000,000,000,001–999,999,999,999,999)

100,000,000,000,001 to 199,999,999,999,999

  • 100,000,000,000,031 : smallest 15-digit prime number[1][2]
  • 100,000,012,392,316 : smallest 15-digit triangular number, 14,142,136th triangular number[3][4]
  • 100,169,256,075,517 : 202nd Markov number[5]
  • 106,974,698,806,081 : 203rd Markov number
  • 111,111,111,111,111 : repunit
  • 111,146,809,165,122 : 43rd Wedderburn-Etherington number[6]
  • 114,988,706,524,270 : 34th Motzkin number[7]
  • 117,669,030,460,994 : 204th Markov number, 69th Fibonacci number
  • 120,984,833,091,531 : 53rd repfigit[8]
  • 124,145,519,261,542 : 38th Pell number[9]
  • 124,738,635,483,875 : number of series-reduced planted trees with 51 nodes[10]
  • 127,353,146,734,466 : 205th Markov number
  • 130,429,015,516,800 : 82nd superabundant number[11]
  • 144,403,552,893,600 : 83rd superabundant number
  • 145,624,636,022,689 : 206th Markov number
  • 148,135,740,183,017 : 207th Markov number
  • 151,620,880,341,401 : 208th Markov number
  • 152,657,555,033,144 : number of (unordered, unlabeled) rooted trimmed trees with 41 nodes[12]
  • 163,767,326,286,012 : number of 55-bead necklaces (turning over is allowed) where complements are equivalent[13]
  • 166,799,988,689,300 : number of 54-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed[14]
  • 180,995,342,924,521 : 209th Markov number
  • 184,717,953,466,367 : 42nd Woodall number[15]
  • 187,611,224,490,881 : 210th Markov number
  • 190,392,490,709,135 : 70th Fibonacci number
  • 195,643,523,275,200 : 84th superabundant number, 20th superior highly composite number[16]

200,000,000,000,000 to 299,999,999,999,999

  • 213,458,046,676,875 = 27!!. There are 213,458,046,676,875 total unrooted trees for 16 taxa[17][18]
  • 215,440,028,338,359 : number of secondary structures of RNA molecules with 40 nucleotides[19]
  • 217,774,440,785,026 : 211th Markov number
  • 222,222,222,222,222 : repdigit
  • 238,763,690,000,642 : 212th Markov number
  • 259,215,937,709,463 : 22nd Schröder–Hipparchus number[20]
  • 259,918,212,890,625 : 27th automorphic number[21]
  • 262,229,286,072,101 : 213th Markov number
  • 263,747,951,750,360 : 28th Catalan number[22]
  • 265,077,991,831,995 : number of series-reduced planted trees with 52 nodes
  • 266,552,682,265,118 : 44th Wedderburn-Etherington number
  • 270,585,509,032,586 : 54th repfigit
  • 288,807,105,787,200 : 85th superabundant number
  • 299,713,796,309,065 : 214th Markov number, 39th Pell number

300,000,000,000,000 to 399,999,999,999,999

  • 308,061,521,170,129 : 215th Markov number, 71st Fibonacci number
  • 314,159,265,358,979: the first 15 decimal digits of pi[23][24]
  • 316,141,040,381,993 : 216th Markov number
  • 321,685,824,284,100 : number of 56-bead necklaces (turning over is allowed) where complements are equivalent
  • 327,534,518,354,296 : number of 55-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
  • 330,931,069,469,828 : 35th Motzkin number
  • 332,380,318,337,465 : 217th Markov number
  • 333,333,333,333,333 : repdigit
  • 335,990,918,918,981 : 17th alternating factorial[25]
  • 355,687,428,096,000 = 17!
  • 355,687,428,096,153 : 17th factoriangular number[26]
  • 378,231,999,954,943 : 43rd Woodall number
  • 379,325,837,704,445 : 218th Markov number
  • 381,249,713,544,034 : 219th Markov number
  • 382,745,902,953,654 : number of (unordered, unlabeled) rooted trimmed trees with 42 nodes

400,000,000,000,000 to 499,999,999,999,999

  • 426,776,599,819,081 : 220th Markov number
  • 433,210,658,680,800 : 86th superabundant number
  • 444,444,444,444,444 : repdigit
  • 459,789,046,174,429 : 221st Markov number
  • 473,638,416,248,177 : 222nd Markov number
  • 498,454,011,879,264 : 72nd Fibonacci number

500,000,000,000,000 to 599,999,999,999,999

  • 542,557,456,311,485 : 223rd Markov number
  • 544,288,586,926,914 : number of secondary structures of RNA molecules with 41 nucleotides
  • 554,510,738,235,029 : 224th Markov number
  • 555,555,555,555,555 : repdigit
  • 563,637,117,190,957 : number of series-reduced planted trees with 53 nodes
  • 577,614,211,574,400 : 87th superabundant number

600,000,000,000,000 to 699,999,999,999,999

  • 632,084,292,449,766 : number of 57-bead necklaces (turning over is allowed) where complements are equivalent
  • 639,754,054,803,187 : 45th Wedderburn-Etherington number
  • 643,371,380,132,744 : number of 56-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
  • 666,666,666,666,666 : repdigit
  • 668,746,232,531,714 : 225th Markov number
  • 686,480,075,504,546 : 226th Markov number

700,000,000,000,000 to 799,999,999,999,999

  • 723,573,111,879,672 : 40th Pell number
  • 740,081,787,109,376 : 28th automorphic number
  • 754,788,753,590,897 : 55th repfigit
  • 767,465,181,141,553 : 227th Markov number
  • 774,056,185,954,303 : 44th Woodall number
  • 777,777,777,777,777 : repdigit

800,000,000,000,000 to 899,999,999,999,999

  • 806,515,533,049,393 : 228th Markov number, 73rd Fibonacci number
  • 866,421,317,361,600 : 88th superabundant number
  • 867,493,136,119,153 : 229th Markov number
  • 888,888,888,888,888 : repdigit

900,000,000,000,000 to 999,999,999,999,999

  • 953,467,954,114,363 : 36th Motzkin number, largest known Motzkin prime
  • 960,445,232,762,244 : number of (unordered, unlabeled) rooted trimmed trees with 43 nodes
  • 971,341,527,703,714 : 230th Markov number
  • 998,123,312,425,769 : 231st Markov number
  • 999,999,999,999,989 : largest 15-digit prime number[27][28]
  • 999,999,999,999,999 : largest 15-digit number, repdigit

See also

References

  1. ↑ Template:Cite OEIS
  2. ↑ Weisstein, Eric W.. "Next Prime" (in en). Wolfram Research, Inc.. https://mathworld.wolfram.com/NextPrime.html. 
  3. ↑ Gupta, Shyam Sunder (2002-10-26). "Fascinating Triangular Numbers". https://www.shyamsundergupta.com/triangle.htm. 
  4. ↑ Samojluk, Artur; Siemaszko, Artur (2026-06-30). "An Efficient Algorithm for Estimating Prime Counts" (in en). https://arxiv.org/abs/2606.31761v2. 
  5. ↑ Template:Cite OEIS
  6. ↑ Template:Cite OEIS
  7. ↑ Template:Cite OEIS
  8. ↑ Template:Cite OEIS
  9. ↑ Template:Cite OEIS
  10. ↑ Template:Cite OEIS
  11. ↑ Template:Cite OEIS
  12. ↑ Template:Cite OEIS
  13. ↑ Template:Cite OEIS
  14. ↑ Template:Cite OEIS
  15. ↑ Template:Cite OEIS
  16. ↑ Template:Cite OEIS
  17. ↑ Kong, Yibo; Tiley, George P.; Solis-Lemus, Claudia (2023-12-26). "Unsupervised Learning of Phylogenetic Trees via Split-Weight Embedding" (in en). https://arxiv.org/abs/2312.16074v2. 
  18. ↑ Perretto, Mauricio; Lopes, Heitor Silvério (2005-09-30). "Reconstruction of phylogenetic trees using the ant colony optimization paradigm". Genetics and Molecular Research 4 (3): 581–589. ISSN 1676-5680. http://silverio.net.br/heitor/publicacoes/2005/gmr43.pdf. 
  19. ↑ Template:Cite OEIS
  20. ↑ Template:Cite OEIS
  21. ↑ Template:Cite OEIS
  22. ↑ Template:Cite OEIS
  23. ↑ Galperin, G. (2003). "Playing Pool With π (The number π from a billard point of view)" (in en). Regular and Chaotic Dynamics 8 (4): 375. doi:10.1070/RD2003v008n04ABEH000252. ISSN 1560-3547. http://rcd.ics.org.ru/RD2003v008n04ABEH000252. 
  24. ↑ Template:Cite OEIS
  25. ↑ Template:Cite OEIS
  26. ↑ Template:Cite OEIS
  27. ↑ Weisstein, Eric W.. "Previous Prime" (in en). Wolfram Research, Inc.. https://mathworld.wolfram.com/PreviousPrime.html. 
  28. ↑ Template:Cite OEIS

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