7,221,871

7221871

Starting at 7,221,871, the Collatz iteration reaches 1 after 266 steps. The first transition is 21665614; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 7221871

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 7,221,872

Proper Divisor Sum 1

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #7221869 ← → #7221911

Radix Representation

Decimal	7221871
Binary	11011100011001001101111 (23 bits)
Octal	0o33431157
Hexadecimal	0x6E326F

Divisor Catalog (2)

1 7,221,871

Collatz Trajectory (266 steps to reach 1)

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

7,221,871 21,665,614 10,832,807 32,498,422 16,249,211 48,747,634 24,373,817 73,121,452 36,560,726 18,280,363 54,841,090 27,420,545 82,261,636 41,130,818 20,565,409 61,696,228 30,848,114 15,424,057 46,272,172 23,136,086 11,568,043 34,704,130 17,352,065 52,056,196 26,028,098 13,014,049 39,042,148 19,521,074 9,760,537 29,281,612 14,640,806 7,320,403 21,961,210 10,980,605 32,941,816 16,470,908 8,235,454 4,117,727 12,353,182 6,176,591 18,529,774 9,264,887 27,794,662 13,897,331 41,691,994 20,845,997 62,537,992 31,268,996 15,634,498 7,817,249 23,451,748 11,725,874 5,862,937 17,588,812 8,794,406 4,397,203 13,191,610 6,595,805 19,787,416 9,893,708

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