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A281222
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Products of 10 distinct primes (squarefree 10-almost primes).
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5
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6469693230, 6915878970, 8254436190, 8720021310, 9146807670, 9592993410, 10407767370, 10485364890, 10555815270, 11125544430, 11532931410, 11797675890, 11823922110, 12095513430, 12328305990, 12598876290, 12929686770, 13162479330, 13220677470, 13467764310
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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a(1) = 2*3*5*7*11*13*17*19*23*29 = 6469693230 = prime(10)# = A002110(10), the 10th primorial number.
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PROG
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(PARI) IsInA281222(n) = n > 0 && issquarefree(n) && bigomega(n) == 10
(PARI) list(lim, pr=10, maxp=oo)=if(pr==1, return(primes([2, min(lim\1, maxp)]))); my(v=List(), pr1=pr-1, mx=prod(i=1, pr1, prime(i))); forprime(p=prime(pr), min(lim\mx, maxp), my(u=list(lim\p, pr1, p-1)); for(i=1, #u, listput(v, p*u[i]))); Set(v) \\ Charles R Greathouse IV, Feb 03 2023
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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