Hebdomekontahenophobia

Hebdomekontahenophobia (from Greek hebdomḗkonta, "seventy", and hen, "one") is the fear of 71. The fear was triggered when a video was released on YouTube about the meaning of 71 being the F-word. As a result, heptykontenophobia is associated with zomaiphobia, fear of F-word.

Others may fear 71 since it's the mirror of 17 (Heptadekaphobia), or some other say it adds to 8 (7+1=8) (Octophobia).

Number phobias

Oudenophobia (fear of 0) · Henophobia (fear of 1) · Dyophobia (fear of 2) · Triskaphobia (fear of 3) · Tetraphobia (fear of 4) · Pentaphobia (fear of 5) · Hexaphobia (fear of 6) · Heptaphobia (fear of 7) · Octophobia (fear of 8) · Enneaphobia (fear of 9) · Decaphobia (fear of 10) · Hendecaphobia (fear of 11) · Dodecaphobia (fear of 12) · Triskaidekaphobia (fear of 13) · Tetradecaphobia (fear of 14) · Dekapentophobia (fear of 15) · Hexadecaphobia (fear of 16) · Heptadecaphobia (fear of 17) · Octodecaphobia (fear of 18) · Enneadecaphobia (fear of 19) · Eikosiphobia (fear of 20) · Eikosihenaphobia (fear of 21) · Eikosidyophobia (fear of 22) · Eikositriophobia (fear of 23) · Eikositetraphobia (fear of 24) · Eikosipentaphobia (fear of 25) · Eikosihexaphobia (fear of 26) · Eikosiheptaphobia (fear of 27) · Eikosioctaphobia (fear of 28) · Eikosienneaphobia (fear of 29) · Trigintiphobia (fear of 30) · Triacontahenphobia (fear of 31) · Triantadyophobia (fear of 32) · Triantatriaphobia (fear of 33) · Triantatesseraphobia (fear of 34) · Triantapentaphobia (fear of 35) · Triantahexaphobia (fear of 36) · Triakontenneaphobia (fear of 39) · Tessarakontaphobia (fear of 40) · Tessarakontadyophobia (fear of 42) · Tessarakontaheptaphobia (fear of 47) · Dyoquinquagintaphobia (fear of 52) · Pentekontoctophobia (fear of 58) · Hexekontadyophobia (fear of 62) · Hexekontaheptaphobia (fear of 67) · Hexekontenneaphobia (fear of 69) · Hebdomekontahenophobia (fear of 71) · Ogdokontaheptaphobia (fear of 87) · Ogdokontaoctaphobia (fear of 88) · Enenekontenneaphobia (fear of 99) · Hekatophobia (fear of 100) · Hekatohendecaphobia (fear of 111) · Hekatenenekontahenophobia (fear of 191) · Diakosioihekkaidekaphobia (fear of 216) · Diakosioipentekontaphobia (fear of 250) · Triakosioitriakontatriophobia (fear of 333) · Tetrakosioeikosiphobia (fear of 420) · Pentakosioipentekontahenophobia (fear of 551) · Hexakosioihekkaidekaphobia (fear of 616) · Hexakosioihexekontahexaphobia (fear of 666) · Heftakosioitessarakontaheptaphobia (fear of 747) · Enniakosioihendecaphobia (fear of 911) · Enniakosioenenekontenneaphobia (fear of 999) • Milliphobia (fear of 1000) · Quattuormiliasescentoruphobia·(fear of 4600) · Tessarakontadyochilahexekontenneaphobia (fear of 42069) Nongentiseptuagintatrestrillionsescentiquinquagintanovemmiliacentumtredecimdeciesoctingentivigintiquattuormiliatrecentiphobia(fear of 973,659,113,824,315) · Compustitusnumerophobia (fear of composite numbers) · Meganumerophobia (fear of large numbers) · Imparnumerophobia (fear of odd numbers) · Omalonumerophobia (fear of even numbers) · Piphobia (fear of pi) · Phiphobia (fear of the golden ratio) · Primonumerophobia (fear of prime numbers) · Paranumerophobia (fear of irrational numbers) · Neganumerophobia (fear of negative numbers) · Decadisophobia (fear of decimals)