4,247,697

3 × 19 × 74521

Starting at 4,247,697, the Collatz iteration reaches 1 after 149 steps. The first transition is 12743092; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3 × 19 × 74521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 5,961,760

Proper Divisor Sum 1,714,063

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #4247693 ← → #4247707

Radix Representation

Decimal	4247697
Binary	10000001101000010010001 (23 bits)
Octal	0o20150221
Hexadecimal	0x40D091

Divisor Catalog (8)

1 3 19 57 74,521 223,563 1,415,899 4,247,697

Collatz Trajectory (149 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

4,247,697 12,743,092 6,371,546 3,185,773 9,557,320 4,778,660 2,389,330 1,194,665 3,583,996 1,791,998 895,999 2,687,998 1,343,999 4,031,998 2,015,999 6,047,998 3,023,999 9,071,998 4,535,999 13,607,998 6,803,999 20,411,998 10,205,999 30,617,998 15,308,999 45,926,998 22,963,499 68,890,498 34,445,249 103,335,748 51,667,874 25,833,937 77,501,812 38,750,906 19,375,453 58,126,360 29,063,180 14,531,590 7,265,795 21,797,386 10,898,693 32,696,080 16,348,040 8,174,020 4,087,010 2,043,505 6,130,516 3,065,258 1,532,629 4,597,888 2,298,944 1,149,472 574,736 287,368 143,684 71,842 35,921 107,764 53,882 26,941

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